if we were to count everything that goes down on quantum / ups attack slightly / ups defense slightly, we would end with :
Other :
Short sword - long sword.(Ups 3 attack.)
Dagger - dirk.(Ups 1 attack)
Hammer - gavel(Ups 3 attack)
Shard (blue) - SoD
Shard (green) - SoG
Shard (yellow) - SoR
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Entropy
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Maxwell's Demon - Maxwell's Demon (Ups 2 defense.)
Purple dragon - Amethyst dragons (Cost and defense raise by 1. Attack raises by 2.)
Lycanthrope - Werewolf (Ability goes - 1
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)
Fallen elf - Fallen druid (The cost stays the same, defense goes up by 1 and mutations are improved.)
Discord - Improved discord (Attack is upped by 2)
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Death
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Bone dragon - Ivory dragon (Cost stays the same but attack ups by 1.)
Virus - Retrovirus. (Cost goes up, but instead of infection it's now plague.)
Flesh Spider - Flesh Recluse (Cost stays the same, attack goes up by 3.)
Vulture - Condor (Same cost, + 1 attack and defense.)
Skull Shield - Skull Buckler (Cost lowers by 2)
Skeleton - Elite skeleton (No one uses, I think, but the cost stays the same and attacks up by 1 defense and 1 attack.)
Poison - Deadly Poison (1
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cost goes up, 1
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counter also goes up.)
Plague - Improved Plague. (The cost goes down by 2)
Bone Wall - Bone Wall (The cost goes down by 2.)
Arsenic - Arsenic (The cost is the same, but 2 attack ups.)
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Gravity
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Sapphire Charger - Elite Charger (3 attack up, no cost difference. o.o)
Armagio - Elite Armagio (5 defense up, 1 attack up, cost same)
Graviton Mercenary - Graviton Guard (the cost lowers by 2.)
Colossal Dragon - Massive Dragon (A whooping 18 boost in defense, 1 attack up, and 2 cost higher.)
Gravity Shield - Gravity Shield (Cost lowers by 2)
Momentum - Unstoppable (Cost lowers by 1)
Otyugh - Elite Otyugh (Cost goes up by 1, defense ups by 2)
Gravity Pull - Gravity Force (The cost lowers by 1)
Graviton Fire Eater - Graviton Firemaster (cost lowers by 1, and defense ups by 1)
Titan - Titan (No cost change + 1 attack)
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Eart
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Antlion - Elite Antlion (2 attack up, 1 defense up, no cost change)
Hematite Golem - Steel Golem (2 attack up, 3 defense up, no cost change.)
Stone Dragon - Basalt Dragon (everything (attack, defense, cost) ups by two.)
Plate Armor - Heavy Armor (No cost change, ups the defense the critter gains by 3 (adding to the 3 it had, so it is +6 in a monsters def boost)
Gnome Rider - Gnome Gemfinder (Adds 1 earth to your quanta pool each turn)
Graboid - Elite Graboid ( No change, but the Elite Graboid evolves to a Elite shrieker..)
Shrieker - Elite Shrieker ( No cost change, but the attack ups by 2 and def by 1)
Earthquake - Quicksand (Cost lowers by 1)
Pulverizer - Pulverizer (ability cost goes down by 1.)
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Life
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Emerald Dragon - Jade Dragon (The cost goes up by two, attack ups by 2, defense ups by 3.)
Horned Frog - Giant Frog (No cost change, no defense change, but +2 attack.)
Rustler - Leaf Dragon (2 defense boost.)
Cockatrice - Elite cockatrice (No cost change, + 1 attack and defense.)
Forest Spirit - Forest Spectre (No cost change, + 1 boost to attack and +2 to defense.)
Heal - Improved Heal (Lower costs by 1)
Carapace Shield - Carapace Buckler (+1 attack block)
Emphatic Bond - Feral Bond (Cost lowers by 1)
Druidic staff - Jade Staff (No cost difference, attack ups by 2)
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Fire
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Ash Eater - Brimstone Eater (adds 1 fire quantum to your quantum pool each turn.)
Crimson Dragon - Ruby Dragon (+2 cost, +3 attack, -1 def.)
Fire Spirit - Fire Spectre (+2 attack +1 defense.)
Fire Bolt - Fire Lance (cost lowers by 2)
Fire Shield - Fire Buckler(Cost lowers by 2)
Deflagration - Explosion (Cost lowers by 1)
Rain of Fire - Fire Storm (Cost lowers by 2)
Immolation - Cremation (Instead of 7 to fire quantum pool, +9 upped.)
Lava Golem - Lava Destroyer (No cost change, attack +2)
Fahrenheit - Fahrenheit (+1 attack.)
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Water
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Chrysaora - Physalia (+2 attack)
Blue Crawler - Abyss Crawler (+3 attack, +3 defense. +1 cost)
Freeze - Congeal (The critter is now stuck for 4 turns instead of 3)
Ice bolt - Ice Lance (cost lowers by 2)
Ice Shield - Permafrost Shield (Cost ups by 2 (?), the defense it denies is now 2)
Purify - Purify (healing counter is 2 instead of 1)
Ice Dragon - Arctic Dragon (cost ups by 2, attack by 4, defense lowers by 1)
Mind Flayer - Ulitharid (+1 cost, +1 attack, +2 defense, -1 ability cost (
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) )
Trident - Poseidon (Ability cost - 1)
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Light
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Photon - Ray of Light (+1 light quantum each turn)
Golden Dragon - Light Dragon (+1 cost, +2 def and attack)
Pegasus - Elite Pegasus (+1 attack, +2 defense)
Holy Light - Holy Flash (Cost becomes 0. )
Solar Shield - Solar Buckler (-1 cost)
Guardian Angel - Archangel (The cost goes up by 3, but the attack goes up by 6 and defense by 1)
Blessing - Improved Blessing (-1 cost)
Miracle - Improved Miracle (The quanta necessary to cast is lowered by 3, but the rest of the light quantum you have still is extinguished when this card is played.)
Morning Star - Morning Glory (+1 attack.)
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Air
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Dragonfly - Damselfly (+1 attack, -1 defense, 1 air quantum per turn.)
Wyrm - Elite Wyrm (+2 attack.)
Azure Dragon - Sky Dragon (+2 cost, +3 attack, +1 defense)
Fog Shield - Improved Fog (-1 Cost)
Thunderstorm - Lightning Storm (-1 cost)
Flying Weapon - Animate Weapon (cost is 1 random quantum instead of 1 air.)
Firefly Queen - Elite Queen (produces elite fireflies)
Firefly - Elite Firefly (+1 attack, gains fire quantum instead of light)
Owl's eye - Eagle's Eye (+2 attack.)
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Time
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Deja Vu (+1 attack +1 defense)
Fate Egg - Fate Egg (Hatches a upped critter)
Procrastination - Turtle Shield (-2 cost)
Reverse Time - Rewind(-1 cost)
Golden Hourglass - Electrum Hourglass (Ability -1)
Devonian Dragon - Sirulian Dragon (+3 attack, + 2 cost, defense - ?)
Anubis - Elite Anubis (-1 ability.)
Scarab - Elite Scarab (+1 attack.)
Eternity - Eternity (-1 cost)
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Darkness
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Black Dragon - Obsidian Dragon (+2 cost, +2 attack, +1 defense.)
Devourer - Pest (+2 defense.)
Parasite - Bloodsucker (+2 attack)
Dusk Mantle - Improved Dusk (-2 cost)
Steal - Improved Steal (-1 cost)
Nightfall - Eclipse (cost = ?, attack +2 on all
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or
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Critters, while before the attack was +1)
Drain Life - Siphon Life (cost -2)
Vampire Stiletto - Vampire Dagger (+1 cost, +2 attack)
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Aether
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Spark - Ball of Lightning (+2/3(?????) attack)
Lightning - Thunderbolt (-1 cost)
Parallel Universe - Twin Universe (-1 cost)
Immortal - Elite Immortal (?? cost +1, attack +1 ???)
Dimensional Shield - Phase Shield (-1 cost)
Phase Dragon - Elite Phase Dragon (+1 cost, +2 attack )
Phase Spider - Phase Recluse (+1 cost +3 attack)
Lobotomizer - Electrocutor (-1 ability cost)
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Phew.
Though It's not over.
Cards I left out (and why)
All pillars (No explanation for this one, sorry. just because... it's not that big a upgrade..)
Abomination (The cost lowers a lot, true. but the attack too. and defense too.)
Dissipation Shield - Dissipation Field (Depends on playstyle. the upped works for rainbows, with quantum pillars.)
Chaos Seed - Chaos Power (again, playstyle. it depends if you want to harm the opponent's critters or buff your own.)
Nova - Supernova ( AGAIN, playstyle. Supernova has 2 entropy cost but gives 2 extra quantum to each element. Nova has no cost but gives 1 to each)
Mutation - Improved Mutation (again.. playstyle. with un-upped you could harm the opponent by turning his critters into abomination, with improved you can get your critters enhanced.)
Boneyard - Graveyard (Cost ups by two, but gives elite skeleton. It's not that good..)
Titanium shield - Diamond Shield (the cost goes up, but defense goes up. problem is, cost goes up more then the defense.)
Emerald Shield - Jade Shield (Read up ^^)
Toadfish - Pufferfish (Deals poison when hits, but attack lowered.)
Arctic Squid - Octopus (no change?)
Reflective Shield - Mirror Shield (No change?)
Sundial (Might think about that. the cost turns 0, but to draw a cost is 2 light.)
Minor vamp - Vampire (The cost is more then the attack boost????)
Immortal - Elite Immortal (???)
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Sorry for the long post. Anyway, I think I might have missed some cards, And I sure missed some information. everything that is with a "?", even if it's 1,2,3, or 100, it's that I don't know if the information is right.