Obeka, Splitter of Seconds

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Mechanized Production, Descent into Avernus, Azor's Elocutors
• B2 Core — Not in the same deck as its two-card combo partners: Mechanized Production, Descent into Avernus, Azor's Elocutors
• B3 Upgraded — Not in the same deck as its early two-card combo partners: Mechanized Production, Descent into Avernus, Azor's Elocutors
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Mechanized Production, Descent into Avernus, Azor's Elocutors (early with Mechanized Production, Descent into Avernus, Azor's Elocutors)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

17 known combos, 3 of them two-card.

• Obeka, Splitter of Seconds + Mechanized Production
  Produces: Win the game
  View on Commander Spellbook
• Obeka, Splitter of Seconds + Descent into Avernus
  Produces: Near-infinite Treasure tokens for all players, Near-infinite damage to all players
  View on Commander Spellbook
• Obeka, Splitter of Seconds + Aggravated Assault + Replicating Ring
  Produces: Infinite colored mana, Infinite combat damage, Infinite combat phases
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2024-04-12 · Wizards of the Coast
  If multiple phases are added to the same point in your turn, the most recently created phase happens first. For example, say Obeka deals combat damage and its ability resolves during your combat damage step, giving you two additional beginning phases each containing an upkeep step after this combat phase. During end of combat, another effect gives you an additional combat phase after this combat phase. The additional combat will happen first, followed by the additional beginning phases containing the two upkeep steps.
• 2024-04-12 · Wizards of the Coast
  After the beginning phases containing the additional upkeep steps, the game proceeds to the next phase as normal, which is likely to be your postcombat main phase (unless something has added even more phases; see below).
• 2024-04-12 · Wizards of the Coast
  Abilities that trigger "at the beginning of [your] upkeep" will trigger at the beginning of each additional upkeep step as well.
• 2024-04-12 · Wizards of the Coast
  Since the upkeep step can only occur during the beginning phase, getting one or more additional upkeep steps outside of the beginning phase actually means you get an additional beginning phase for each of those upkeeps after this phase. In those beginning phases, the untap and draw steps will be skipped.
• 2024-04-12 · Wizards of the Coast
  The beginning phases containing the additional upkeep steps occur after the current combat phase ends. The last step of the combat phase is the end of combat step.

Rulings: Scryfall · Wizards of the Coast