Wrenn and Six [Modern Horizons] Set_Magic Player Rewards 2007 then you may put a

then you may put a permanent card from your hand onto the battlefield

Sacrifice Powder Keg: Destroy each artifact and creature with mana value equal to the number of fuse counters on Powder Keg

Thus the volume you hold was written

sacrifice this artifact and destroy all nonland permanents

Wrenn and Six [Modern Horizons] Set_Magic Player Rewards 2007 then you may put aSet: Modern Horizons Type: Legendary Planeswalker Wrenn Rarity: Mythic Cost: {R}{G} +1: Return up to one target land card from your graveyard to your hand. 1: Wrenn and Six deals 1 damage to any target. 7: You get an emblem with "Instant and sorcery cards in your graveyard have retrace." (You may cast instant and sorcery cards from your graveyard by discarding a land card in addition to paying their other costs.)