Horse

Level Up (You may pay {x} at any time to level up
this creature, where {x} is its level plus 1. Also it
starts on level 1.)
Lv.1When a creature enters the battlefield under
your control it gets +1+0 until the end of turn.
Lv.2When a creature enters the battlefield under
your control it gets +2+0 until the end of turn.
Lv.3When a creature enters the battlefield under
your control it gets +3+0 until the end of turn.