Secret Lair Countdown

Sorcery

Reveal the top X cards of your library. You may put any number of permanent cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.

Genesis Wave

Secret Lair Drop

Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.

Bribery

Land

This land enters tapped.
{T}: Add {C}.
{3}, {T}, Return this land to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

Maze's End

Legendary Creature — Shapeshifter

Changeling (This card is every creature type.)
As Morophon enters, choose a creature type.
Spells of the chosen type you cast cost {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.
Other creatures you control of the chosen type get +1/+1.

Morophon, the Boundless

You may play an additional land this turn.
Draw a card.