Official skyscraper 2 text: "Once per turn, during your Main Phase, you can Special Summon 1 "Elemental HERO" monster from your Graveyard that was destroyed by battle. (Only this card's controller can use this effect.)"
Anime card text: "Once per turn, during your Main Phase, you can Special Summon 1 "Elemental HERO" monster from your Graveyard that was destroyed by battle ignoring Summoning conditions. (Only this card's controller can use this effect.)"
Don't confuse those 2, the official doesn't say you can ignore summoning conditions