Cube invasion

During your upkeep, create a 1/1 cube token that's colorless. {t}, sacrifice this: create X treasure tokens, where X is how many cubes you have. Whenever a cube dies, create a treasure token. Sacrifice 2 cubes: Create 2 treasure tokens and draw a card. If you have 20 treasures or 40 cubes, sacrifice them all, then deal 20 damage to 1 opponent. Then create 5 cubes. Discard X cards and/or Exile X graveyard cards: Create double X Cubes. Cubes do not dissipear when they die, they go to your graveyard.