Omnath, Locus of Mana [Commander Collection: Green] Champs and States Set: Time Spiral Timeshifted Type:

Set: Time Spiral Timeshifted Type: Artifact Rarity: Rare Cost: {0} {1}

that specifically lists "Blue-Eyes White Dragon" in its text

Set: Archenemy Type: Creature — Skeleton Warrior Rarity: Uncommon Cost: {1}{B} {1}{B}: Return Reassembling Skeleton from your graveyard to the battlefield tapped

Set: OTS Tournament Pack 9 Card type: Tuner/Effect Monster Rarity: Common Attack: 800 Defense: 0 If only your opponent controls a monster

You can only use each effect of "Nemeses Keystone" once per turn

Omnath, Locus of Mana [Commander Collection: Green] Champs and States Set: Time Spiral Timeshifted Type:Set: Commander Collection: Green Type: Legendary Creature Elemental Rarity: Mythic Cost: {2}{G} You don't lose unspent green mana as steps and phases end. Omnath, Locus of Mana gets +1 +1 for each unspent green mana you have. From the Roil emerged a ravenous primordial being of pure mana.