Can we suggest new environmental effects, or have you decided on them already?
Some suggestions:
Realm of Earth
Indestructible Diamond Shield, and it blocks 5 damage instead. If this is overpowered, the defense can be reduced.
Quicksand will destroy 4 pillars instead.
Burrowing will not halve ATK points.
Protect Artifact now works on creatures. Is this possible?
Realm of Life
Indestructible Jade Staff, and it heals 10 HP per turn.
Empathic Bond will now heal TWO HP per creature.
All Growth will gain +4 instead of +2. If this is OP, then reduce it.
Improved Heal will heal for 20 HP. If OP, reduce it.
Realm of Fire
Indestructible Fahrenheit, and it deals 2 damage per 5 quanta. If this is OP, then change it to 3 damage per 10 quanta.
Indestructible Fire Buckler. Brutal enough already.
Rain of Fire will deal 5 damage to all creatures, and Fire Lance will deal 5 damage per 10 quanta.
Ablaze will gain +5 instead of +2.
Realm of Darkness
Indestructible Dusk Mantle, with 75% chance to evade attacks.
Indestructible Vampire Dagger, and it denies 10 quanta per turn instead of life; this effect is the same as Devourers. This shouldn't be too overpowered, since the Entropy Realm destroys 24 quanta per turn, and the Gravity Realm destroys all quanta above 5.
Pests will drain 2 quanta per turn.
Siphon Life will drain 3 HP per 10 Dark quanta.
Realm of Water
All freezing will last for 5 turns.
Indestructible Permafrost Shield, with 75% chance to freeze for 5 turns.
Ice Lance has 75% chance to freeze for 5 turns, and it deals 3 damage per 10 Water quanta.
Realm of Time
Reverse Time will kill the creature instead. This is achievable, right?
Indestructible Turtle Shield, will cause all creatures to be stuck in time bubble for 2 turns.
All Gods start with 3 indestructible Electrum Hourglasses, and they use random quanta instead of Time. This is also achievable, right?
Realm of Aether
Indestructible Electrocutor, but it can make other creatures Immortal instead. To prevent this from being OP, the ability can cost 3 Aether or more.
Phase Shield will last for 4 turns.
Phase Dragon has 1 HP, unblockable by Gravity Shield.
Maybe Twin Universe can cost a lot less.
Realm of Light
When using Miracle, it does not wipe out all Light quanta.
Blessing will give +6/+6. If this is OP, then the amount can be decreased.
Holy Flash will heal for 20, and it will be mainly used to heal the Gods. If OP, can be reduced.
Realm of Air
Indestructible Eagle's Eye, and it deals 5 damage instead.
Lightning Storm will deal 3 damage to all creatures.
Dive will TRIPLE attacks instead of double.