Is Meekstone legal in Standard, Modern, and Commander?

Meekstone is legal in: Legacy, Vintage, Commander.

What type of card is Meekstone?

Meekstone is an Artifact. Its oracle text reads: "Creatures with power 3 or greater don't untap during their controllers' untap steps."

Artifact

Creatures with power 3 or greater don't untap during their controllers' untap steps.

Set Limited Edition Alpha

Rarity Rare

Artist Quinton Hoover

Artifact Commander Legacy Vintage