I love these ideas. For Entropy, maybe have a chaos infliction upon a random opponent creature (Summon costs
![Entropy :entropy](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/entropy18x18.png)
). For darkness, steal a random permanent from your opponent (not a weapon) (drains
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
per turn, only works 2 times) (summon,
![Darkness :darkness](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/darkness18x18.png)
), for gravity, add between +1 and +3 to one of your creatures (for
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
quanta) (summon,
![Gravity :gravity](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/gravity18x18.png)
), for earth, summon a random quanta generating creature (dragonfly, gnome rider, etc.) if the card is upped summon the creature upped (brimstone eater, damselfly, gnome gem-finder, etc.) for 3 turns (summon,
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
).
These are my ideas, please use them freely as you wish.