Cost increase and suspend
The first Rift Bolt costs {0} to cast, and the second costs {1}.



The total cost to cast a spell
= mana cost or alternative cost
+ additional costs and cost increases
- cost reductions

Suspend allows spells to be cast for the alternative cost of "free". Cost increases, such as the one from Damping Sphere, still apply.[1]

If you can't cast it (because you can't or choose not to produce the mana for it), it will remain exiled indefinitely.




Only Trinisphere modifies the total cost.