Knight, Hallownest King

+3: Sacrifice any number of creatures and create the same number of 1/1 sibling creature tokens.
-1: Draw a card for each sibling token you control. Each card that entered your hand this turn costs 1 less mana to cast.
-4: You gain an emblem which says "When an opponent casts a spell, you gain 2 life and they lose 2 life". This effect is stackable.