Urzas Cave This Urzas land tags out into a different land at some point during the game, making it one of the most universally accessible ways to find a specific land
I love this game so much
Section 29 Summary Input: One playing of Spinal Villain Output: Lots of reuse of King Crab Layer count: For each Bloodbond March, for each Clash of Realities on a new Mimic Vat, for each Guilty Conscience on Mimic Vat, for each Rite of Passage putting counters on Mimic Vat, for each Doubling Season on the Rite of Passage counters added to Mimic Vat, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to Mimic Vat, for each Rings of Brighthearth on Mimic Vat's ability, for each Clash of Realities on Spinal Villain, for each Guilty Conscience on Spinal Villain, for each Rite of Passage putting counters on Spinal Villain, for each Doubling Season on the Rite of Passage counters added to Spinal Villain, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to Spinal Villain, for each Rings of Brighthearth on Spinal Villain's ability, for each Grip of Chaos, for each Psychic Battle...15

On the other hand, she's a perfect example of an "army in a can," or a permanent that can single-handedly produce a ton of creatures
Foil cards from the second printing had a sandpaper finish[1]