Allosaurus Shepherd is a mythic Creature — Elf Shaman card from Double Masters 2022 (2X2), collector number 457.
This spell 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.