Sliver creatures you control have menace. (They can't be blocked except by two or more creatures.)

Sliver creatures you control have flying and haste.

Sliver creatures you control have flying.

All Sliver creatures have shadow. (They can block or be blocked by only creatures with shadow.)

Slivers can't be blocked except by Slivers.

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)

All Sliver creatures have trample.

Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

All Sliver creatures have double strike.

Sliver creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

All Sliver creatures have trample.

Sliver creatures you control have first strike.

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

All Sliver creatures have first strike.

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

All Sliver creatures have first strike.

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}.

All Sliver creatures have absorb 1. (If a source would deal damage to a Sliver, prevent 1 of that damage.)

This spell can't be countered. Sliver spells can't be countered.

Sliver creatures you control get +2/+0.

All Sliver creatures get +1/+0.

All Sliver creatures get +2/+0.

Sliver creatures you control get +2/+0.

All Sliver creatures have frenzy 1. (Whenever a Sliver attacks and isn't blocked, it gets +1/+0 until end of turn.)

Sliver creatures you control get +3/+3.

All Sliver creatures get +2/+2.

All Sliver creatures get +1/+1.

All Sliver creatures get +0/+1.

Sliver creatures you control get +1/+1.

All Sliver creatures get +1/+1.

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

Sliver creatures you control get +0/+1.

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