Powder Keg (Jakub Slemr) [World Championship Decks 1999] Elf Advisor but you may put it

but you may put it on top of your library instead of into your graveyard

then you may put that card on the bottom of your library

Set: Eternal Masters Type: Instant Rarity: Rare Cost: {W} Search your library for an artifact or enchantment card

Set: Revised Edition Type: Artifact Rarity: Uncommon Cost: {1} {T}: Add {C}{C}

Set: Judge Gift Cards 2017 Type: Sorcery Rarity: Rare Cost: {3}{U}{U} Take an extra turn after this one

Powder Keg (Jakub Slemr) [World Championship Decks 1999] Elf Advisor but you may put itSet: World Championship Decks 1999 Type: Artifact Rarity: Rare Cost: {2} At the beginning of your upkeep, you may put a fuse counter on Powder Keg. {T}, Sacrifice Powder Keg: Destroy each artifact and creature with mana value equal to the number of fuse counters on Powder Keg.