Striking Sliver (J21)

Creature — Sliver

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

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uuid: 05d44efa-2057-5cc4-b0ff-83c8af2749fd

2013-07-01:
If Striking Sliver leaves the battlefield after Sliver creatures you control have dealt first-strike damage but before regular combat damage, those Slivers won’t deal regular combat damage (unless they have double strike for some reason).
2013-07-01:
If you change the creature type of a Sliver you control 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 you control.
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.