Keeper of the Secret Lair

WUBRG, T: Creatures you control gain landwalk until end of turn.

Flying, protection from common Whenever Collectigull attacks, reveal the top card of your library. If it's a Booster Fun card, you may put it into your hand.

Flying, haste, protection from red 1, T: Return target legendary creature card from your graveyard to the battlefield. Tap six untapped creatures you control: Return The Cinematic Phoenix from your graveyard to the battlefield. If you tapped six legendary creatures this way, you win the game.

As an additional cost to cast this spell, you may open a sealed Magic booster pack and put the cards on the bottom of your booster pile in a random order. Spells you cast have booster cascade. (It's like cascade, but use your booster pile rather than your library.)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Each player may put a planeswalker or Zombie card from War of the Spark from their hand or graveyard onto the battlefield. II — Sacrifice any number of creatures and/or planeswalkers. Each opponent sacrifices that many creatures and/or planeswalkers. III — Exile up to one target Bolas. Proliferate three times.

Reach Commanders you control get +X/+0, where X is the number of commanders you control.