Mana Vault (2ED-260) - Unlimited Edition Artist_Lake Hurwitz and land cards revealed this

and land cards revealed this way onto the battlefield

Card Effect Boost (As an additional cost to play Zero to Sixty

and gains [Security Attack +1] for each such card

Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats

When Subtlety enters the battlefield

Mana Vault (2ED-260) - Unlimited Edition Artist_Lake Hurwitz and land cards revealed thisCasting Cost Card TypeArtifact RarityRare ArtistMark Tedin Legalities NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic NOT LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer NOT LEGAL Modern NOT LEGAL Legacy NOT LEGAL Pauper NOT LEGAL Vintage NOT LEGAL Penny LEGAL Commander NOT LEGAL Oathbreaker NOT LEGAL Brawl NOT LEGAL Historic Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander NOT LEGAL Duel LEGAL Oldschool NOT LEGAL Premodern LEGAL Predh