Activate only during Main Phase 1. When this card is activated: Target 1 Beast-Warrior-Type monster you control; during this phase, its effects are negated, also it is unaffected by the effects of cards other than this card. (This applies even if this card leaves the field.) All Beast-Warrior-Type monsters you control gain 300 ATK.
If only it's effect also carried onto the battle phase even for a turn... it would be UR material. It would protect the card from Mirror, Wall of D, Econ, ect. The only dangerous thing then would be the monsters to destroy it that turn.
during my opponent's turn i used tenken when sogen was on the field and it negated the sogen buff at first but when my opponent attacked my tenken monster it got sogen buff again. is that supposed to happen or is it a bug?