391. Determine Total Cost

391.1. Determine the base cost of the Ability.

391.1.a. Activated Abilities will have a cost listed before the “:” in their text.
391.1.b. Triggered Abilities will typically not have a base cost associated with them when placed on the chain due to their conditions.

391.2. Apply cost increases and decreases as a result of choices made in the prior step. See rule 346. Playing Cards for more information.

391.3. Apply any other cost increases or decreases as necessary. See rule 346. Playing Cards for more information.