Black Market

Whenever a creature you control attacks alone, it gains deathtouch and lifelink until end of turn. Put a dread counter on this enchantment. Then if there are three or more dread counters on it, transform it.

Whenever you lose life for the first time each turn, put a +1/+1 counter on this creature. (Damage causes loss of life.)

Whenever you tap a Swamp for mana, add an additional .

: This creature gets +1/+1 until end of turn.

Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

At the beginning of your upkeep, if you control ten or more Treasures, you win the game.

At the beginning of your upkeep, this enchantment deals 1 damage to each creature and each player.

, Sacrifice this enchantment: It deals 3 damage to each creature and each player.

At the beginning of your upkeep, put a -1/-1 counter on each creature.