As Rukarumel enters, choose a creature type. Slivers you control and nontoken creatures you control are the chosen type in addition to their other creature types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield. {3}, {T}: Create a 1/1 colorless Sliver creature token.

All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or more poison counters loses the game.)

Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

All Sliver creatures get +0/+2.

Sliver creatures you control have lifelink. (Damage dealt by a Sliver creature you control also causes you to gain that much life.)

All Slivers have "{1}, Sacrifice this permanent: This permanent deals 1 damage to any target." All Slivers have "{1}, Sacrifice this permanent: Prevent the next 1 damage that would be dealt to target player, planeswalker, or Sliver creature this turn."

All Sliver creatures have reach.

All Sliver creatures have "{2}: This creature gets +1/+1 until end of turn."

Sliver creatures you control have "Whenever this creature deals combat damage to a player, put a +1/+1 counter on it."

All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)

All Slivers have "{3}, Sacrifice this permanent: Destroy target permanent."