When Problematic Volcano enters the battlefield, it deals 4 damage to any target. Then, starting with you, each player assigns their creatures to the left or right of the volcano. Creatures enter the battlefield to the left or right of the volcano. Creatures can't block creatures on the other side of the volcano.
![Problematic Volcano [Mystery Booster Playtest Cards]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/files/9d239fbb-b7be-503d-a040-e1b40d2cae6f.jpg?v=1755724644&width=1445)