The Circle of Loyalty [Dominaria United Commander] Plant Hydra Set: Secret Lair Drop Series

Set: Secret Lair Drop Series Type: Artifact Rarity: Rare Cost: {2} {1}

and they have one true form

Evoke—Exile a white card from your hand

Choose a nonland card from it

target opponent skips their next combat phase

The Circle of Loyalty [Dominaria United Commander] Plant Hydra Set: Secret Lair Drop SeriesSet: Dominaria United Commander Type: Legendary Artifact Rarity: Mythic Cost: {4}{W}{W} This spell costs {1} less to cast for each Knight you control. Creatures you control get +1 +1. Whenever you cast a legendary spell, create a 2 2 white Knight creature token with vigilance. {3}{W}, {T}: Create a 2 2 white Knight creature token with vigilance.