Remember this guy from two months back? His effect is finally revealed! (And it supports the new Tramid theme!)

MVP1-JP012 岩石の番兵 Ganseki no Banpei (Giant Sentry of Stone)

Level 3 EARTH Rock-Type Effect Monster

ATK 1300

DEF 2000

The effect of “Giant Sentry of Stone” can only be used once per turn.

(1) If this card is in your Graveyard, and the only monsters you control are Rock-Type monsters: You can Special Summon this card from the Graveyard.

Source