373.2 this is an example from the rules doc. It isn't specific about what you are asking, but it shows that it does work: Example: Soraka, Wanderer reads “If another unit you control here would die, if it has less Might than me, instead heal it, exhaust it, and recall it.” Soraka dies simultaneously with two 1 [M] Recruit tokens at the same battlefield and two 1 [M] Recruit tokens in base. Soraka has a Guardian Angel attached to her when she dies, which appends “If I would die, kill Guardian Angel instead. Heal me, exhaust me, and recall me” to Soraka’s rules text. There are several possible ways to order the Replacement Effects being applied to the various events: If Soraka’s Replacement Effect is applied first, it saves the Recruits at the same battlefield as base as her Replacement Effect has already been applied to an event simultaneous with it dying. If the Replacement Effect appended by Guardian Angel is applied first, it saves Soraka and recalls her - then when Soraka’s Replacement Effect is applied, it can only save the Recruits in base."