Dark Magician of Chaos [DR2-EN066] Ultra Rare Treefolk Shaman return it to its owner's

return it to its owner's hand

{B}: Regenerate Wall of Bone

Then that player loses all unspent mana and you add the mana lost this way

Set: Throne of Eldraine Promos Type: Legendary Planeswalker — Oko Rarity: Mythic Cost: {1}{G}{U} +2: Create a Food token

Set: Pro Tour Collector Set Type: Sorcery Rarity: Rare Cost: {3}{W} Destroy all lands

Dark Magician of Chaos [DR2-EN066] Ultra Rare Treefolk Shaman return it to its owner'sSet: Dark Revelation Volume 2 Card type: Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 2600 When this card is Normal Summoned or Special Summoned, you can add 1 Spell Card from your Graveyard to your hand. A monster that is destroyed by this monster as a result of battle is removed from play instead of going to the Graveyard. If this face up card is destroyed or removed from the field, it is removed from play.