Brood Sliver — ruling 1

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.

Brood Sliver — ruling 2

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.

Brood Sliver — ruling 3

This card’s controller controls the triggered ability, but the controller of the Sliver that deals damage to a player decides whether or not to put the token onto the battlefield under their control.

Brood Sliver : règles, fonctionnement et interactions (MTG)

Brood Sliver is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

How it works : Brood Sliver

Original English text — Wizards of the Coast / Scryfall

#1July 1, 2013· Wizards of the Coast
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.
Card named in this ruling
Sliver
#2July 1, 2013· Wizards of the Coast
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.
Card named in this ruling
Sliver
#3October 4, 2004· Wizards of the Coast
This card’s controller controls the triggered ability, but the controller of the Sliver that deals damage to a player decides whether or not to put the token onto the battlefield under their control.
Card named in this ruling
Sliver