Alex, the One who Assists

+1: Target creature you control gets +1/+1 until end of turn. You may have that creature fight target creature an opponent controls.
-3: Target creature you control gets +X/+0 and trample, where X is the numbers of creatures you control.
-7: You get an emblem with "Whenever a creature put into play under your control, put a creature card from your hand onto the battlefield tapped."