Xtra HERO Infernal Devicer [DUOV-EN013] Ultra Rare 094 This card cannot be Special

This card cannot be Special Summoned except by the effect of "Release Restraint"

And if it does

Special Summon it during the End Phase

I must redouble my efforts

You can only use this effect of "Sinister Serpent" once per turn

Xtra HERO Infernal Devicer [DUOV-EN013] Ultra Rare 094 This card cannot be SpecialSet: Duel Overload Card type: Link Effect Monster Rarity: Ultra Rare Attack: 1700 2 "HERO" monsters If this card is Link Summoned: You can reveal 1 "HERO" Fusion Monster in your Extra Deck, and if you do, add up to 2 of the Fusion Materials listed on that card, with different names, from your Deck to your hand. You cannot Special Summon monsters the turn you activate this effect, except "HERO" monsters. You can only use this effect of "Xtra HERO