Last Updated: 2026-07-16

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191.4. For Abilities, they are the Ability's Controller.

191.4.a. By default, the Controller of an Ability's Source is the Controller of that Ability.
191.4.a.1. If an Ability's Source is located in a non-Board Zone, the Ability's Controller is the Owner of the Source.
191.4.b. Changes to Control of an Ability's Source do not change Control of that Ability.
191.4.c. That player chooses targets.
191.4.d. That player chooses modes.
191.4.e. That player pays costs.
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