Is Thallid Devourer legal in Standard, Modern, and Commander?

Thallid Devourer is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Thallid Devourer?

Thallid Devourer is a Creature — Fungus. Its oracle text reads: "At the beginning of your upkeep, put a spore counter on Thallid Devourer.Remove three spore counters from Thallid Devourer: Create a 1/1 green Saproling creature token.Sacrifice a Saproling: Thallid Devourer gets +1/+2 until end of turn."

Thallid Devourer

Creature — Fungus

At the beginning of your upkeep, put a spore counter on Thallid Devourer.<br>Remove three spore counters from Thallid Devourer: Create a 1/1 green Saproling creature token.<br>Sacrifice a Saproling: Thallid Devourer gets +1/+2 until end of turn.

Set Fallen Empires

Rarity Uncommon

Artist Ron Spencer