"Magic 2014 Core Set", +"life total", +!become, +!"can't change", +!redistribute, +!"set to" (2)
+1: Put a +1/+1 counter on up to one target creature.
−3: Target creature gains flying and double strike until end of turn.
−8: Create X 2/2 white Cat creature tokens, where X is your life total.
As long as your life total is greater than or equal to your starting life total, creatures you control get +1/+1.
Whenever one or more creatures you control attack, you gain life equal to the number of attacking creatures.
Gatherer works better in the Companion app!