Glarb, Calamity's Augur

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

6 known combos.

• Glarb, Calamity's Augur + Valley Floodcaller + Eye of Duskmantle + Sensei's Divining Top + Aetherflux Reservoir
  Produces: Near-infinite damage, Infinite card draw, Near-infinite lifegain
  View on Commander Spellbook
• Glarb, Calamity's Augur + Valley Floodcaller + Disinformation Campaign + Cryptolith Rite
  Produces: Infinite card draw, Infinite draw triggers, Near-infinite storm count
  View on Commander Spellbook
• Matoya, Archon Elder + Mind Over Matter + Glarb, Calamity's Augur
  Produces: Infinite self-discard triggers, Infinite draw triggers, Infinite looting
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2024-07-26 · Wizards of the Coast
  If the top card of your library has {X} in its mana cost, you must choose a value of X that makes that spell's mana value 4 or greater in order to cast it.
• 2024-07-26 · 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 a spell from the top of your library, you can't look at the next one until you're done paying for that spell.
• 2024-07-26 · Wizards of the Coast
  You can 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.
• 2024-07-26 · Wizards of the Coast
  You must pay all costs and follow all timing rules for lands played and spells cast from the top of your library this way.

Rulings: Scryfall · Wizards of the Coast