Rule 204.4 Applied Costs
Applied Costs: These Costs are applied to one or more Game Actions, and typically take the form of a passive ability with a Cost within Instructions preceded by “must.” Example: Mageseeker Investigator reads in part “Opponents must pay [A] for each unit beyond the first to move multiple units to my battlefield at the same time.” This is an applied cost.
- 204.4.a The associated Game Action is the linked Effect for the Cost.
- 204.4.b Applied Costs are paid as the Game Action is performed. They do not use the chain and cannot be reacted to.
- 204.4.c If a player can’t pay or chooses not to pay the Applied Cost, they cannot perform the associated Game Action.