Trazyn the Infinite + Pili-Pala + Gilded Lotus Combo

Trazyn the Infinite on the battlefield (Trazyn the Infinite without summoning sickness on the battlefield).

Pili-Pala and Gilded Lotus in your graveyard.

Activate Trazyn using Gilded Lotus's ability by tapping it, adding three mana of any color.

Activate Trazyn using Pili-Pala's ability by paying and untapping it, adding one mana of any color.

Repeat.

Infinite colored mana