Middle Age Mechs | SGX1-ENS12

Set: Speed Duel GX: Duel Academy Box
Number: SGX1-ENS12
Rarity: Common
Card Type: Skill
Description: All "Ancient Gear" monsters gain 300 ATK. Each time a monster is Normal Summoned/Set, place 1 counter on this card. If you Tribute Summon an "Ancient Gear" monster face-up, you can Tribute this card instead, if the number of its counters is equal to or greater than the number of required Tribute(s).