this deck runs with five colors and is meant to be aggro, with 3 drops or less

virulent, galerider, and cloudshedder are really meant for a quick end with poison counters. Done this combo with a virulent or 2 combined with cloudshedder and/or galerider or other quick drop slivers.

predatory, sinew, leeching are for midgame if i can not get out quick enough combos.

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diffusional though not sometimes effective is more for control decks

darkheart, lavabelly, leyline of sanctity are for burn counter

necrotic with manaweft, harmonic are used for destroying artifact decks or unwanted permanents of another deck

virulent by far seems to be the best against burn, lifelink, and early game wins

i use venom, leeching, and flying slivers more against creature decks to get around attacks and blocks

leyline of the void, necrotic, and harmonic slivers are for graveyard and dredge hate.

lavabelly and spiteful are used for dealing damage to player or plainswalkers