Dead for One Thousand Years
R Destroy this foundation: After your opponent plays an ability on a foundation or asset in their staging area, all copies of that card are considered to have a blank text box until the end of the turn.
Does this card really cancel the ability without officially canceling the ability?
This is the order of operations as I see it:
Player A: Olcadon's F Commit:
Player B: STOP! React with Dead for One Thousand Years to the PLAYING of the ability.
Player A: Attempt to resolve Olcadon's ability, but there is no text box any more. Fizzle.
There was no actual cancel played so cards that stop or alter negate/cancel cannot stop it.
If this works this way, sweet!