The Battlefield

Hullbreaker Horror
Sol Ring
AI DraftFeb 26, 2026

Hullbreaker Horror + Sol Ring

Overview
If Hullbreaker Horror is already on the battlefield, its “Whenever you cast a spell” triggered ability will trigger when you cast Sol Ring, but that trigger cannot target the Sol Ring spell you control or the Sol Ring permanent that hasn’t entered the battlefield yet. You can only target an opponent’s Sol Ring spell on the stack or an existing nonland permanent on the battlefield. This follows the timing and targeting rules for casting spells and for triggered abilities .
Step 1
You cast Sol Ring: the Sol Ring card moves from your hand to the stack and becomes an artifact spell on the stack .
Step 2
Because Hullbreaker Horror is already on the battlefield, its triggered ability “Whenever you cast a spell …” notices the event and triggers; that triggered ability is put onto the stack (it’s an ability whose source is Hullbreaker on the battlefield) .
Step 3
When the trigger is put onto the stack its controller chooses whether to use the first mode (return target spell you don’t control) or the second mode (return target nonland permanent) and chooses targets at that time; targets must be legal when the ability is put onto the stack .
Step 4
Your Sol Ring spell on the stack is not a legal target for the “target spell you don’t control” mode because you control that Sol Ring spell, and the eventual Sol Ring permanent is not yet on the battlefield and so cannot be chosen as a target for the “target nonland permanent” mode .
Step 5
Therefore the trigger can target only spells on the stack you don’t control, or nonland permanents already on the battlefield; it cannot return your own Sol Ring (either its spell or the not-yet-entered permanent) to your hand.
Resolution
When you (the controller of Hullbreaker Horror) cast Sol Ring while Hullbreaker is already on the battlefield: Hullbreaker’s triggered ability triggers on the cast and is put on the stack, but you cannot choose your own Sol Ring spell as the “target spell you don't control” (because you control that spell) and you cannot choose the Sol Ring permanent as a nonland permanent target because it is not yet a permanent on the battlefield at the time the ability is put on the stack. The only legal targets at that moment are spells you don’t control on the stack or nonland permanents already on the battlefield .
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