Otherworld Engine

Flash, enchant player. Enchanted player gains two Otherworld tokens. If enchanted player is not the owner of this card and they are in the Otherworld, they sacrifice a creature of their choice and lose 2 life unless they pay {2}{p/c}. If that price is paid, this card enters its owners battlefield.

Churn—Tap two non-enchantment permanents you control: Mill a card. You may cast that card this turn.