Infinity Dark (GLAS-EN027) - Gladiator's Assault Unlimited

"This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have be treated as an Effect Monster with this effect:
- When this card declares an attack, you can change the battle position of 1 face-up monster your opponent controls."