Spellslime Incubator was introduced with the Paper & Pixels expansion.
Strategy[]
A card that works well with other Mage Room cards that allow the player access to Spell cards. The damage counters do not disappear at the end of the turn, so the damage of this card can exponentially build up. It also pairs especially well with Liger's Den, since Liger's Den allows a player to replace a Spell card they play once per turn, so Spellslime Incubator can always get a damage boost each turn.