Forum:Veiler and Volcasaurus

Both monsters require a face-up target when activating their effects but if it is flipped face-down Veiler will not negate it's effect and Volcasaurus will still destroy it. Why is this? Also If Pot of Duality has it's activation negated can you special summon or play another pot?SaltyPepper (talk • contribs) 07:23, September 14, 2013 (UTC)