The Batcave

The Batcave Enters With a Number of Stash Counters Equal to the number of Artifacts you control
The Batcave taps for one mana of any color to spend to cast artifact spells


{t}{u}{w}{b}

{1}:remove a stash counter and creature a tapped clue token
{5}:Sacrifice 5 Artifacts and search your library for an Artifact with mana value plus 1 higher than 5