Jurassic Power (MP24-EN373) [25th Anniversary Tin: Dueling Mirrors]

All Dinosaur monsters you control gain 300 ATK. You can Normal Summon Level 5 or higher Dinosaur monsters without Tributing. You can send 1 Dinosaur monster from your hand or face-up field to the GY; add 1 Dinosaur monster with 1200 DEF from your Deck to your hand. You can only use this effect of "Jurassic Power" once per turn.