I have two ideas at the moment, and I'd like to see if they would be any good.
??? / ??? (perhaps Diversion?)
Permanent (upped+unupped)
7
/ 6
All spells that target multiple creatures only effect the first target while this card is in play.
(A note: this is possibly for the Flooding competition) Basically, this card would provide a nerf and a smaller buff to mass CC spells. This would make the spell target the first creature it would hit (the first filled slot) and hit it with all of the damage that would normally be spread. This would have obvious consequences for RoF that could buff and nerf it (could kill one creature pretty harshly, but nerfs its normal purpose). However, this card would keep Flooding as it is now, thereby buffing it.
Return / Return
Spell
3
/ 2
Target card in your hand gains a return counter. Cannot target a Return.
A return counter gives the card +1 quanta cost, but also allows it to remain in the hand when played (using up a return counter instead of the card). The +1 cost would leave with the return counter, stack for however many Returns, and be in the same element as the original cost.