Card Name: De-evolve
Set Name: Star Trek
Set Code: trk
Collector Number: 104
Finish: foil
Mana cost: {1}{B}
Type: Enchantment — Aura
Oracle text: Enchant creature
Enchanted creature gets -4/-0, can't block, and is a Salamander. (It loses all other creature types.)
Threshold — At the beginning of each upkeep, if there are seven or more cards in your graveyard, exile enchanted creature.
Rarity: uncommon