Panharmonicon [The List] Artifact and are often eager to

and are often eager to share the dark knowledge they obtain with friendly adventurers

Set: 30th Anniversary Edition Type: Creature — Wurm Rarity: Common Cost: {4}{G}{G} This version of this card has a non-standard Magic back

It's also a Sliver

choose a plane at random from among all planechase planes

Set: Platinum: Arceus Type: Fire Rarity: Holo Rare Retreat cost: Colorless

Panharmonicon [The List] Artifact and are often eager toSet: The List Type: Artifact Rarity: Rare Cost: {4} If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. All who listen hear their own song, a unique melody played just for them.