When played together with post-resolution, aggravated damage effects (e.g. Force of Will), the acting Methuselah can resolve these effects in any order.
100502
Day Operation
Only usable as the action is announced. Vampires cannot block this action. The acting vampire goes to torpor after resolving the action.
As above, but usable if a minion is attempting to block.
Rulings
Must be played (as well as other "as the action is announced" action modifiers) before action modifiers that are not explicitly played "as the action is announced" (e.g., Conditioning).
Replace the action card (if any) before playing it.