Some basic ideas, hope some of them are stolen!
Fissure -
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
card - Spell
Kill all burrowed creatures.
Inferno -
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
card - Permanent
All
![Fire :fire](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/fire18x18.png)
creatures gain +2/-1,
![Water :water](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/water18x18.png)
creatures gain -1/-1.
Blizzard -
![Water :water](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/water18x18.png)
card - Spell
Delays all of your opponent's permanents for 2 turns.
Tornado -
![Air :air](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/air18x18.png)
card - Spell
Deal 4 damage to
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
and
![Death :death](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/death18x18.png)
creatures.
Ascension-
![Air :air](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/air18x18.png)
card - Spell
![Air :air](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/air18x18.png)
creatures gain +2/+3, but are delayed for a turn.
Mighty Flash -
![Light :light](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/light18x18.png)
card - Spell
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
and
![Death :death](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/death18x18.png)
creatures and weapons are delayed for 1 turn.
Quasar -
![Entropy :entropy](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/entropy18x18.png)
- Spell
Deal a random amount of damage to all creatures and players. 0-25 for players, 0-10 for creatures.
Ice Dagger -
![Water :water](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/water18x18.png)
- Permanent (Weapon)
Deal 3 damage at the end of your turn. Might freeze opponent's weapon or destroy opponent's shield.
Transcendent Reveal -
![Light :light](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/light18x18.png)
- Spell
All creatures lose Immortal.
Gaia's Will -
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
- Spell
Destroy 6 pillars on target cluster. the owner of destroyed pillars gains 30 life.
Sucker Punch -
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
- Permanent
Each time the opponent hits with a weapon, there's a 25% chance this permanent deals double the damage back.
Dark Crusader -
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
- Creature
Unholy: Dark Crusader can't target
![Light :light](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/light18x18.png)
permanents.
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
: Endow
Time Passage -
![Time :time](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/time18x18.png)
- Spell
Target creature gains +X/-X, where X is equal to the number of permanents you have.