Sliver Ascendancy

Converge - When Sliver Ascendancy enters the battlefield, choose X, where X is the number of colors of mana spent to cast it.
- Non-colorless Slivers you control have intimidate.
- Slivers you control have hexproof.
- Slivers you control have "Whenever this creature attacks, scry 1."
- Slivers you control have "{2}, Sacrifice this creature: Draw a card."
- Slivers you control have lifelink.