Feral Survivor

When Feral Survivor enters the battlefield, for each card on the battlefield that a player controls whose mana cost is the same type and amount of mana as the amount last used to cast a spell named Feral Survivor, they get a poison counter if that cost included {b}, or, if it included {r}, that player gets a red enchantment Manic token with "{r}, Sacrifice this token, pay 1 poison counter: Deal 1 damage to any t