Halfdane

Flying

At the beginning of your upkeep, you may put a feather counter on target creature. If you do, that creature has base power and toughness 3/1 and has flying for as long as it has a feather counter on it.

: Until end of turn, target creature has base power 1 or base toughness 1.

: Target creature becomes a Frog with base power and toughness 3/3 until end of turn.

: Switch this creature's power and toughness until end of turn.

At the beginning of combat on your turn, put a -1/-1 counter on up to one target creature.

: Until your next turn, Volrath becomes a copy of target creature with a counter on it, except it's 7/5 and it has this ability.

Other black creatures you control get +1/+1.

Other green creatures you control get +1/+1.

At the beginning of your upkeep, you may create a 1/1 black and green Worm creature token.