Undergrowth Stadium [Commander Legends] Legendary Artifact and the whole thing starts

and the whole thing starts to fall apart

Whenever a creature enters the battlefield

Set: Eternal Masters Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with converted mana cost X or less

{2}{G}{G}{G}: Elf creatures you control get +3/+3 and gain trample until end of turn

Set: The Dark Type: Land Uncommon Cost: {T}: Untap target attacking creature

Undergrowth Stadium [Commander Legends] Legendary Artifact and the whole thing startsSet: Commander Legends Type: Land Rare Cost: Undergrowth Stadium enters the battlefield tapped unless you have two or more opponents. {T}: Add {B} or {G}. To get to Valor's Reach, competitors must first make a name for themselves in the smaller arenas.