Barbed Sliver

Creature — Sliver    (CMC:3)

All Sliver creatures have ": This creature gets +1/+0 until end of turn."

Spans of spines leapt from one sliver to the next, forming a deadly hedge around the Weatherlight.

126 TPR • ENScott Kirschner

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Legal in: Tempest Block,Legacy,Vintage,Commander

Oracle Text (click to copy):

7/1/2013
Abilities that Slivers grant, as well as power/toughness boosts, are cumulative. However, for some abilities, like flying, having more than one instance of the ability doesn’t provide any additional benefit.
7/1/2013
If the creature type of a Sliver changes so it’s no longer a Sliver, it will no longer be affected by its own ability. Its ability will continue to affect other Sliver creatures.