Q1: What order do an effect that triggers when a card is removed from a security stack and a Security effect on a checked card activate when they trigger simultaneously upon a security check?
The Security effect will activate first. Upon a security check, a Security effect will immediately activate without pending activation.
Lv.5 Lamiamon BT21-025 R Ultimate | Virus | Dragonkin/LIBERATOR <Progress> (While attacking, your opponent's effects don't affect this Digimon.) [Your Turn] [Once Per Turn] When any of your [Reptile] or [Dragonkin] trait Digimon's attack targets change, trash your opponent's top security card. --- Inherited: [All Turns] [Once Per Turn] When your opponent's security is removed from, you may play 1 [Reptile] or [Dragonkin] trait Digimon card with 5000 DP or less from your hand without paying the cost.
Lv.5 Lamiamon BT21-025 R Ultimate | Virus | Dragonkin/LIBERATOR <Progress> (While attacking, your opponent's effects don't affect this Digimon.) [Your Turn] [Once Per Turn] When any of your [Reptile] or [Dragonkin] trait Digimon's attack targets change, trash your opponent's top security card. --- Inherited: [All Turns] [Once Per Turn] When your opponent's security is removed from, you may play 1 [Reptile] or [Dragonkin] trait Digimon card with 5000 DP or less from your hand without paying the cost.
Lv.5 Lamiamon BT21-025 R Ultimate | Virus | Dragonkin/LIBERATOR {{Progress}}. [Your Turn] {{OncePerTurn}} When any of your [Reptile] or [Dragonkin] trait Digimon's attack targets change, trash your opponent's top security card. --- Inherited: [All Turns] {{OncePerTurn}} When your opponent's security is removed from, you may play 1 [Reptile] or [Dragonkin] trait Digimon card with 5000 DP or less from your hand without paying the cost.