>>389

https://media.wizards.com/2025/downloads/MagicCompRules%2020250725.txt?_gl=1*6pe3zd*_gcl_au*MjA0OTQ0ODQ0Ni4xNzUwOTg2MjE3*FPAU*MjA0OTQ0ODQ0Ni4xNzUwOTg2MjE3*_ga*MTA3MDE4MzI2OS4xNzM3NDY5ODgz*_ga_X145Z177LS*czE3NTM4NTc5NjQkbzI3JGcxJHQxNzUzODU4MDM4JGo1NiRsMCRoNjEyMDM5NDM4*_fplc*eFB3RWNETDQ3TWxDeVA0V0w0YnV4aHRjdEphcjFOaFYlMkJSTVQ2RzRJc0NtTVpnNWdyJTJGallJVmQ5bzdsT1ElMkZtUEk4b1glMkJtViUyQiUyQlIlMkZSTUhxTHdvelJtJTJGR2hJQUZxQ2k5JTJGeENjanBCdllJZlA5VXRVJTJGZHZ3YTJrUml2c20xQlElM0QlM0Q.

109.5. The words “you” and “your” on an object refer to the object’s controller, its would-be controller (if a player is attempting to play, cast, or activate it), or its owner (if it has no controller). For a static ability, this is the current controller of the object it’s on. For an activated ability, this is the player who activated the ability. For a triggered ability, this is the controller of the object when the ability triggered, unless it’s a delayed triggered ability. To determine the controller of a delayed triggered ability, see rules 603.7d–f.

ワイも試したことはないが

レクイエムのモノリス/Requiem Monolith

{T}: Until end of turn, target creature gains "Whenever this creature is dealt damage, you draw that many cards and lose that much life." That creature's controller may have this artifact deal 1 damage to it. Activate only as a sorcery.

target creatureのyou(the object’s controller)がWhenever this creature is dealt damage, you draw that many cards and lose that much life
になるはず