Activate Devoted Druid by tapping it, creating a 1/1 Elf Warrior creature token.
Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Infinite creature tokens

Infinite creature ETB

Devoted Druid

Presence of Gond

Sigil of the Nayan Gods

Activate Barrenton Medic by tapping it, creating a 1/1 Elf Warrior creature token.
Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Barrenton Medic

Activate Devoted Druid by tapping it, creating at least one 1/1 Elemental creature token with haste.
Activate Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Infinite creature tokens with haste

Elemental Mastery

Activate Cinderhaze Wretch by tapping it, creating a 1/1 Elf Warrior creature token.
Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Cinderhaze Wretch

Activate Barrenton Medic by tapping it, creating at least one 1/1 Elemental creature token with haste.
Activate Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Activate Cinderhaze Wretch by tapping it, creating at least one 1/1 Elemental creature token with haste.
Activate Cinderhaze Wretch's second ability by putting a -1/-1 counter on it, untapping it.
Repeat.

Combos with "Sigil of the Nayan Gods"