Staff of Domination + Priest of Titaniaearly
Infinite card draw, Infinite draw triggers, Infinite lifegain, Infinite lifegain triggers, Infinite untap of creatures you control, Infinite mana creatures you control can produce, Infinite green mana
Umbral Mantle + Fanatic of Rhonasearly
Infinite green mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
Umbral Mantle + Priest of Titaniaearly
Infinite green mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
Ashaya, Soul of the Wild + Argothian Elder
Infinite mana lands you control can produce, Infinite untap of creatures you control, Infinite mana creatures you control can produce, Infinite untap of nontoken creatures you control, Infinite mana nontoken creatures you control can produce, Infinite untap of lands you control
Ashaya, Soul of the Wild + Ley Weaver
Infinite mana lands you control can produce, Infinite untap of creatures you control, Infinite mana creatures you control can produce, Infinite untap of nontoken creatures you control, Infinite mana nontoken creatures you control can produce, Infinite untap of lands you control
Staff of Domination + Circle of Dreams Druid
Infinite card draw, Infinite draw triggers, Infinite lifegain, Infinite lifegain triggers, Infinite mana creatures you control can produce, Infinite untap of creatures you control, Infinite green mana
Staff of Domination + Elvish Archdruid
Infinite card draw, Infinite draw triggers, Infinite lifegain, Infinite lifegain triggers, Infinite untap of creatures you control, Infinite mana creatures you control can produce, Infinite green mana
Staff of Domination + Selvala, Heart of the Wilds
Infinite card draw, Infinite colored mana, Infinite draw triggers, Infinite lifegain, Infinite lifegain triggers, Infinite mana creatures you control can produce, Infinite untap of creatures you control
Umbral Mantle + Circle of Dreams Druid
Infinite green mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
Umbral Mantle + Elvish Archdruid
Infinite green mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
Umbral Mantle + Selvala, Heart of the Wilds
Infinite colored mana, Infinitely large creature until end of turn, Infinite untap of creatures you control, Infinite mana creatures you control can produce
Combo data from Commander Spellbook. “Early” combos (cheap enough to win in the first few turns) put a deck at Bracket 4; the rest are at home in Bracket 3.