Emperor Mihail II

Bracket

• B1 Exhibition — allowed: No restriction at this bracket
• B2 Core — allowed: No restriction at this bracket
• B3 Upgraded — allowed: No restriction at this bracket
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• No Game Changer, mass land denial, extra turn, tutor or two-card combo

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

No known combos for this card.

Combos: Commander Spellbook

Rulings

• 2022-09-09 · Wizards of the Coast
  The last ability triggers whenever you cast any Merfolk spell, not just when you cast a Merfolk spell from the top of your library. It will resolve before the spell that caused it to trigger, even if that spell has been countered or otherwise left the stack.
• 2022-09-09 · Wizards of the Coast
  If the top card of your library changes while you're casting a spell, playing a land, or activating an ability, you can't look at the new top card until you finish doing so. This means that if you cast the top card of your library, you can't look at the next one until you're done paying for that spell.
• 2022-09-09 · Wizards of the Coast
  You must follow the normal timing permissions and restrictions of the cards you play from your library.
• 2022-09-09 · Wizards of the Coast
  Emperor Mihail II lets you look at the top card of your library whenever you want (with one restriction—see below), even if you don't have priority. This action doesn't use the stack. Knowing what that card is becomes part of the information you have access to, just like you can look at the cards in your hand.

Rulings: Scryfall · Wizards of the Coast