Ancestral Knowledge [Weatherlight] XY33 During either player's Battle Phase

During either player's Battle Phase (Quick Effect): You can target 1 "Windwitch" monster you control

Set: Legendary Duelists: Synchro Storm Card type: Effect Monster Rarity: Super Rare Attack: 1200 Defense: 600 If you control no monsters

also your opponent's cards and effects cannot activate when a monster is Fusion Summoned this way

destroy all face-up monsters you control

if this card battles a monster: You can destroy that monster

Ancestral Knowledge [Weatherlight] XY33 During either player's Battle PhaseSet: Weatherlight Type: Enchantment Rarity: Rare Cost: {1}{U} Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When Ancestral Knowledge enters the battlefield, look at the top ten cards of your library, then exile any number of them and put the rest back on top of your library in any order. When Ancestral Knowledge leaves the