Eightfold Maze (PTK-002) - Portal Three Kingdoms Number_BT6-112 you may play this as

you may play this as though it were an instant

Megatron deals damage equal to the sacrificed artifact's mana value to target creature

Whenever an opponent casts a spell with mana value 3 or less

As an additional cost to cast this spell

Eightfold Maze (PTK-002) - Portal Three Kingdoms Number_BT6-112 you may play this asCasting Cost Card TypeInstant RarityRare ArtistShang Huitong Legalities NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer NOT LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Brawl NOT LEGAL Historic Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern LEGAL Predh Cast this spell