Temperance of Prophecy [REDU-EN017] Super Rare Yanggu It gains haste

It gains haste

choose an Attribute and destroy all face-up monsters with that Attribute

if you control the artifact with the highest mana value or tied for the highest mana value

you can look at the top card of your Deck

and Special Summon 1 "Blackwing" Synchro Monster from your Extra Deck whose Level equals the total Levels of the removed monsters

Temperance of Prophecy [REDU-EN017] Super Rare Yanggu It gains hasteSet: Return of the Duelist Card type: Effect Monster Rarity: Super Rare Attack: 1000 Defense: 1000 During your Main Phase, if you have activated a "Spellbook" Spell Card previously this turn: You can Tribute this card; Special Summon 1 Level 5 or higher LIGHT or DARK Spellcaster Type monster from your Deck. You cannot Special Summon another Level 5 or higher monster during the turn you activate this effect.