If you're counting on Winged Sliver or Muscle Sliver or any other boost to carry you through combat, then a removal spell on the key ability can destroy your entire team, and even with Hibernation Sliver available such a blow is often crippling
But its terrible to invest in a popular paper deck only to find out its most important cards cant be played anymore
Akiri, Fearless Voyager Akiri, Fearless Voyager can provide up to one card draw per opponent, provided you're able to attack each player with an equipped creature
Plus, she exiles, instead of destroys, which is just strong for your creature-removal needs
Tevesh Szat, Doom of Fools takes your opponents commanders and Sengir, the Dark Baron takes their life
Im surprised we havent seen this card before now, but its definitely a welcome addition to many decks, from clones to assassins