Stevanos, Lord of Luck

+5: Gain control of target MTG card. Its controller puts a store credit token with Vigilance into play.
0: Put a sarcasm counter on target human. Humans with sarcasm tokens on them experience mild confusion and maximum laughs.
-20: You get an emblem with "Whenever you choose one or more packs for a customer that customer will pull a mythic or foil rare."