Toxin Sliver

{3}{B} · Creature — Sliver

Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.

Motor: se resuelve a mano

Rulings (2)

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.
Wizards of the Coast · 2013-07-01
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.
Wizards of the Coast · 2013-07-01