Diadem of Dreamstate

Once per turn, when this or a non-token permanent you control with ward is destroyed, you may pay

. If you do, create a Ponder token.

Ward 2

Permanents are cards that exist in the arena by themselves (e.g. they persist between turns) and include equipment, weapons, auras/items (that have been put into the arena by resolution or effect) etc.
The permanent does not have to be destroyed from its own ward prevention effect for this to trigger. It triggers as long as it had the ward ability when it was destroyed.

Ward X - If your hero would be dealt damage, prevent X of that damage and destroy this.

Ward is a static ability that generates a fixed-prevention effect.
The prevention effect is not optional. It applies whenever damage would be dealt to your hero.
If another prevention effect reduces a damage event to 0, the replacement condition is no longer met (damage would not be dealt), so Ward would not apply.
The prevention amount applies to a single damage event. The leftover prevention amount does not apply to any future damage that would be dealt to your hero.
If the damage prevention can not be applied due to an effect, the object with Ward on it is still destroyed as part of the replacement effect application.

SubtypesHead

KeywordsWard 2