- If you target "Spirit Reaper" with this effect it is immediately destroyed by its own effect. "Viser Des" will not apply its "This card cannot be destroyed" effect.
- If your opponent controls no monsters when you Normal Summon "Viser Des" you cannot apply any of its effects.
- If "Viser Des" is destroyed by a card effect before your 3rd Standby Phase, your opponent's monster will not be destroyed.
- If "Viser Des" or the targeted monster is removed from the field before your 3rd Standby Phase, even temporarily, all effects of "Viser Des" will stop being applied.
- The "third" mentioned in the text of "Viser Des" refers to how many of your Standby Phases occur after Normal Summoning "Viser Des".
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