Furina, God of Justice

Creatures you control are every creature type.
Whenever an enchantment enters or you fully unlock a room, choose one —
• Draw a card.
• Create a 1/1 blue Oceanid creature token.
• You next enchantment spell has cascade.
{t}: Lock or unlock target room.
{3}{u}{b}: Each opponent mills three cards, choose a nonland permanent from a graveyard, put it onto
the battlefield under your control.