Spectral Sliver
Creature — Sliver Spirit
All Sliver creatures have ": This creature gets +1/+1 until end of turn."
Pete Venters
Salvat 2005 (PSAL)
• #D27Rulings
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 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)