Energy Flux [Fourth Edition] Human Werewolf if you have activated a

if you have activated a "Spellbook" Spell Card previously this turn: You can Tribute this card

Set: Unglued Type: Enchantment Rarity: Uncommon Cost: {2}{U}{U} Whenever a player casts a spell without asking your permission while casting it

Set: Shadowmoor Type: Enchantment Rarity: Rare Cost: {2}{B/R}{B/R} At the beginning of each player's draw step

Kiora Type: Creature — Leviathan Rarity: Rare Cost: {5}{G}{U} Flying

Set: Legendary Duelists: Magical Hero Card type: Effect Monster Rarity: Common Attack: 1600 Defense: 100 When this card is Normal Summoned: You can add 1 Spell/Trap from your Deck to your hand

Energy Flux [Fourth Edition] Human Werewolf if you have activated aSet: Fourth Edition Type: Enchantment Rarity: Uncommon Cost: {2}{U} All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."