Bahn, Unruly Prodigy

Bahn comes into play with X spell slot counters.
Search your library for an instant with converted
mana cost X and put it on top of your library.
{t}: Remove 1 to 3 spell slot counters: choose one:
1 spell slot-Misty Step: Return Bahn to your hand.
2 spell slots-Counterspell: Counter target spell.
3 spell slots-Steel Wind Strike: deal 5 damage
split among up to 3 creatures and/or players.