The Battlefield

Animar, Soul of Elements
Hullbreaker Horror
AI DraftFeb 26, 2026

Animar, Soul of Elements + Hullbreaker Horror

Overview
When you cast Hullbreaker Horror while you control Animar, Soul of Elements, Animar’s “Whenever you cast a creature spell” trigger goes on the stack and will resolve before Hullbreaker resolves, putting a +1/+1 counter on Animar [Ruling 2018-03-16]. That counter increase does not retroactively change the cost you already paid to cast Hullbreaker. Hullbreaker’s “This spell can’t be countered” applies to the spell on the stack, and Hullbreaker’s “Whenever you cast a spell …” ability won’t trigger for the cast of Hullbreaker itself because that ability only functions once Hullbreaker is a permanent on the battlefield after it resolves .
Step 1
You announce casting Hullbreaker Horror (a creature spell) and pay its costs; the spell is put onto the stack.
Step 2
Because you cast a creature spell, Animar’s triggered ability triggers and goes on the stack above the Hullbreaker spell [Ruling 2018-03-16].
Step 3
Players receive priority with Animar’s triggered ability on top of the stack. When that triggered ability resolves, you put a +1/+1 counter on Animar [Ruling 2018-03-16].
Step 4
The +1/+1 counter increases Animar’s counters and thus will reduce the cost of creature spells you cast in the future, but it does not retroactively change the cost that was paid to cast the Hullbreaker already on the stack.
Step 5
Hullbreaker remains on the stack. Its printed static ability "This spell can't be countered" applies to the spell on the stack (so it can’t be countered while on the stack).
Step 6
If Hullbreaker resolves, it is put onto the battlefield as a creature permanent under your control . After it is on the battlefield, its triggered ability "Whenever you cast a spell…" will trigger for spells you cast while Hullbreaker is on the battlefield.
Resolution
You cast Hullbreaker Horror (a creature spell). Animar’s triggered ability triggers and will resolve before Hullbreaker resolves, adding a +1/+1 counter to Animar [Ruling 2018-03-16]. The mana you paid for Hullbreaker when you cast it is not retroactively changed by that counter. Hullbreaker’s "This spell can’t be countered" text applies to the spell on the stack, and Hullbreaker’s "Whenever you cast a spell…" ability will only start seeing spells you cast after Hullbreaker has entered the battlefield .
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