Sliver Legion
Legendary Creature — Sliver
All Sliver creatures get +1/+1 for each other Sliver on the battlefield.
Hidden within the clicking, chittering swarm is a unique mind, still young, but growing more aware as time passes.
Lius Lasahido
Rulings
If Sliver Legion and two other Slivers are on the battlefield, for example, each of them gets +2/+2.
(wotc • 2021-03-19)
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a Sliver may become lethal if another Sliver leaves the battlefield during that turn.
(wotc • 2021-03-19)
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.
(wotc • 2013-07-01)
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.
(wotc • 2013-07-01)
Rulings
If Sliver Legion and two other Slivers are on the battlefield, for example, each of them gets +2/+2.
(wotc • 2021-03-19)
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a Sliver may become lethal if another Sliver leaves the battlefield during that turn.
(wotc • 2021-03-19)
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.
(wotc • 2013-07-01)
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.
(wotc • 2013-07-01)