Gemstone Array + Giant-Sized Flying Ant + Mana Echoes + Saheeli, the Sun's Brilliance

UR identity

Commander legal

The 4 combo pieces

What must be in place

Saheeli does not have summoning sickness.
{U}{R} available, plus an additional {U}{R} if you control less than three creatures that share a creature type with Giant-Sized Flying Ant

How to execute it

  1. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of Giant-Sized Flying Ant with haste.
  2. When the token Giant-Sized Flying Ant enters the battlefield, it and Mana Echoes trigger.
  3. Resolve the Giant-Sized Flying Ant trigger, untapping Saheeli.
  4. Holding priority, if you control less than four creatures that share a creature type with Giant-Sized Flying Ant, repeat steps 1 through 3 one additional time.
  5. Resolve all Mana Echoes triggers, adding {C} for each creature you control that shares a creature type with Giant-Sized Flying Ant for each trigger resolved this way.
  6. Activate Gemstone Array twice by paying {4}, putting two charge counters on it.
  7. Activate Gemstone Array twice by removing two charge counters from it, adding {U}{R}.
  8. Repeat.

What the combo produces