Blur Sliver

Every Sliver lord grants one keyword to the whole creature type, and haste is the one that most directly attacks the deck's central weakness. A board of Slivers wants to overwhelm with stacked anthems and shared abilities, but those bonuses arrive a turn late: each new Sliver normally sits out a combat step while the opponent untaps and answers it. Granting haste to the entire tribe collapses that delay. Every Sliver you draw or flicker into play attacks the turn it lands, which turns a midrange swarm into a closing engine, since the body that just entered is also a clock immediately. The 2/2 frame keeps it modest enough to be a creature you actually want around (it benefits from its own grant and from every other lord), but the value is purely in the shared keyword, not the stats. Among the haste-granters, this one lives in red, the color that already wants its threats to apply pressure the moment they resolve, and it slots into the Sliver shell's red half without asking anything beyond a Mountain. The trade-off is the lord's fragility: removal aimed at it strips the speed from the whole board, and Slivers historically build a tower of dependencies where each removed lord cascades into a slower, smaller team. That is the genre's bargain, and haste is the keyword that makes the rest of the stack lethal sooner.