Potion of Willpower

Potion of Willpower costs {1} less to cast the turn
you draw it from the Shady Wears Deck.
Potion of Willpower Enters the battlefield with 3 Willpower Counters on it.
Remove a Willpower counter from Potion of Willpower: Tap Target attacking Creature.
At the beginning of your upkeep, if Potion of Willpower has no Willpower Counters on it, sacrifice it.