msem-instigator

Exile target nonland permanent if its mana value is less than or equal to the greatest number of nonland permanents controlled by a single player.

As an additional cost to cast this spell, sacrifice a permanent.
Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Destroy target monocolored creature.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, return that card to the battlefield under your control.

Counter target noncreature spell. Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

The Last Sacred Gate enters tapped.
While you're searching your library, you may play The Last Sacred Gate from your library. (You may only do so during your turn and if you have a land play remaining.)
{T}: Add {C}.