Make an Example 138 (Commander: Streets of New Capenna) Slime Sovereign [Element Bonus] As long as

[Element Bonus] As long as this card is one of your omens and you have no other reserve cost 1 omens

it gets +2/+2 until end of turn

Merlin Lineage [Sheen 8+] On Enter: You may banish a regalia card from your material deck

You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost

−12: Exile all cards from target player's library

Make an Example 138 (Commander: Streets of New Capenna) Slime Sovereign [Element Bonus] As long asEach opponent separates the creatures they control into two piles. For each opponent, you choose one of their piles. Each opponent sacrifices the creatures in their chosen pile. (Piles can be empty.)