Spiteful Sliver
The tribe usually lives on combat math: stack keywords, widen the board, win before the swarm is answered. This ability points that logic somewhere stranger. Every Sliver you control now carries a damage-reflection trigger, so any time one of them takes damage (a block, a burn spell, a sweeper that clocks damage in increments) it fires that much back at a player or planeswalker of your choice. Note what it does not do: your Sliver still eats the damage. It dies if the damage kills it. What changes is that the hit no longer stays contained on your side of the table; a matching amount lands on a target you pick. That makes the reflection scale with the damage dealt, so a board pumped by the rest of the tribe converts each unfavorable trade into direct damage on top of whatever the creature would have done. It punishes defensive blocks (they take the damage back), and it turns incremental sweepers into a liability, since every point of edge damage becomes reach at your opponent's face or their walker. Even burn or pingers aimed at your own Slivers redirect their damage total onward. That is a genuinely different kill than "attack until something connects": a redirect engine grafted onto a creature type that had never asked its board to absorb punishment on purpose. The 2/2 for is filler until you count how many other Slivers inherit the trigger.
