The Battlefield

Pawn of Ulamog
Pitiless Plunderer
Reassembling Skeleton
Viscera Seer
AI DraftFeb 26, 2026

Pawn of Ulamog + Pitiless Plunderer + Reassembling Skeleton + Viscera Seer

Overview
When you sacrifice a creature to Viscera Seer, the sacrifice happens while paying the cost to activate the Seer, that creature is put into its owner's graveyard and triggered abilities that care about creatures dying (Pawn of Ulamog and Pitiless Plunderer) trigger as a result; those triggered abilities and the Seer’s activated ability are put on the stack in the order determined by activation and trigger timing, and the tokens created by those triggers are not available to pay costs that were already paid. State-based actions are checked as normal and triggered abilities are handled and placed on the stack as described in .
Step 1
You activate Viscera Seer’s ability and announce costs and targets; as part of paying the cost you sacrifice a creature (for example, Reassembling Skeleton). Paying costs happens before the activated ability is placed on the stack .
Step 2
The sacrificed creature is put into its owner's graveyard; that event causes triggered abilities that look for creatures dying to trigger (Pawn of Ulamog's 'Whenever this creature or another nontoken creature you control dies' and Pitiless Plunderer's 'Whenever another creature you control dies'). Those triggers are created at that moment .
Step 3
After costs are paid the activated Viscera Seer ability is put on the stack; then the game processes triggered abilities that were created and places them on the stack on top of the Seer ability (so the triggers will resolve before the Seer ability) as described in .
Step 4
Whenever each triggered ability resolves it creates its token(s): Pawn of Ulamog’s triggers each may create a 0/1 Eldrazi Spawn token (you may choose to create or not because it’s a 'may'), and Pitiless Plunderer’s triggers each create a Treasure token. Those tokens only exist after their respective triggered abilities resolve.
Step 5
After those triggers resolve (and their tokens enter the battlefield), the Viscera Seer activated ability will eventually resolve and let you Scry 1. If you want Reassembling Skeleton back you can then pay {1}{B} and activate its graveyard ability (provided you have the mana); tokens created by the resolved triggers (for example Treasures) can be used as mana only after they exist and only to pay costs going forward.
Resolution
If you activate Viscera Seer and sacrifice Reassembling Skeleton as the cost: the sacrifice occurs while paying the activation cost, Reassembling Skeleton is put into the graveyard, Pawn of Ulamog will trigger (it triggers for that nontoken creature dying) and Pitiless Plunderer will trigger (it triggers for another creature dying). The triggered abilities will be placed on the stack (above the Seer ability) and will create their tokens when they resolve. You cannot use tokens those triggers will create to pay costs that were already paid (for example, the sacrifice cost you paid or the activation cost you already paid). If you later pay {1}{B} to return Reassembling Skeleton from the graveyard, it returns to the battlefield tapped (it is a new permanent) and that returning does not retroactively affect the earlier death triggers. See and .
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