Allosaurus Shepherd [Double Masters 2022] POP Series 2 if Mana Vault is tapped

if Mana Vault is tapped

Sacrifice Powder Keg: Destroy each artifact and creature with mana value equal to the number of fuse counters on Powder Keg

We didn't expect the ground itself to stand

They may cast that card without paying its mana cost

then add {R} for each card named Rite of Flame in each graveyard

Allosaurus Shepherd [Double Masters 2022] POP Series 2 if Mana Vault is tappedSet: Double Masters 2022 Type: Creature Elf Shaman Rarity: Mythic Cost: {G} Allosaurus Shepherd can't be countered. Green spells you control can't be countered. {4}{G}{G}: Until end of turn, each Elf creature you control has base power and toughness 5 5 and becomes a Dinosaur in addition to its other creature types.