[The costs for the cards Little Cherub, Faith and Lawyer are missing. I think I’ll design some more cards later, for some raisin.]
EDIT: [More submissions:]
As long as this creature remains on the field, you cannot be attacked directly.
Remove from play any creatures this card destroys.
Every turn, you may designate one creature as being unable to attack. This creature cannot be attacked as long as there are other creatures on your side of the field.
Blocker;This creature cannot attack. If this creature destroys another creature, gain 1000 Life.
Destroy one of your opponent’s creatures. Revive it on your side of the field two turns later.
When this card is played, all your opponent’s creatures either become enraged or incapacitated (from laughter) for the rest of the game. Enraged creatures gain a 1.5x power boost, but must attack random targets on their opponent’s side.