Arms Regeneration (BLMR-EN032) - Battles of Legend: Monstrous Revenge 1st Edition

Activate 1 of the following effects.
• Target 1 face-up monster you control; it gains 800 ATK until the end of this turn.
• Target 1 Equip Spell in either GY; Set it to your field, or equip it to 1 appropriate monster you control.
You can only activate 1 "Arms Regeneration" per turn.