Rick Potion #9

At the beginning of each player's upkeep, that
player chooses a non-Cronenberg creature they control, it loses all abilities and becomes a 2/2
green Cronenberg. Whenever a Cronenberg
creature deals combat damage to another
creature, prevent that damage and turn it into a Cronenberg. When all creatures are
Cronenbergs, sacrifice Rick Potion #9, destroy
all creatures, and draw a card.