Slivdrazi Monstrosity — ruling 1

{C} can be paid only with one colorless mana.

Slivdrazi Monstrosity — ruling 2

Devoid means “This object is colorless.”

Slivdrazi Monstrosity — ruling 3

Due to the carefully calibrated system of layers that Magic uses to determine the interaction of continuous effects, gaining an ability that changes the color of an object has no effect on the color of that object. Despite this, Slivdrazi Monstrosity causes Slivers to become colorless as they gain devoid. Rather than try to figure out how this could work, this card should just be played as though it read “Slivers you control have devoid and annihilator 1 and are colorless.”

Slivdrazi Monstrosity — ruling 4

Annihilator 1 means “Whenever this creature attacks, defending player sacrifices a permanent.”

Slivdrazi Monstrosity — ruling 5

If a creature is attacking a planeswalker, the planeswalker’s controller is the defending player.

Slivdrazi Monstrosity — ruling 6

If a creature attacks a planeswalker and that planeswalker leaves the battlefield, the creature continues to attack. If it’s blocked, it’ll deal combat damage as normal, but if it’s unblocked, it won’t deal any combat damage.

Slivdrazi Monstrosity — ruling 7

Slivdrazi Monstrosity’s ability affects itself, causing it to become colorless and gain devoid and annihilator 1 while it’s on the battlefield. While not on the battlefield, it’s all colors.

Slivdrazi Monstrosity : règles, fonctionnement et interactions (MTG)

Slivdrazi Monstrosity 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

Eldrazi you control are Slivers in addition to their other types. Slivers you control have devoid and annihilator 1. : Create a 1/1 colorless Eldrazi Sliver creature token. It has "Sacrifice this creature: Add ."

How it works : Slivdrazi Monstrosity

Original English text — Wizards of the Coast / Scryfall

#1November 12, 2019· Wizards of the Coast
can be paid only with one colorless mana.
No other card is named in this ruling.
#2November 12, 2019· Wizards of the Coast
Devoid means “This object is colorless.”
No other card is named in this ruling.
#3November 12, 2019· Wizards of the Coast
Due to the carefully calibrated system of layers that Magic uses to determine the interaction of continuous effects, gaining an ability that changes the color of an object has no effect on the color of that object. Despite this, Slivdrazi Monstrosity causes Slivers to become colorless as they gain devoid. Rather than try to figure out how this could work, this card should just be played as though it read “Slivers you control have devoid and annihilator 1 and are colorless.”
No other card is named in this ruling.
#4November 12, 2019· Wizards of the Coast
Annihilator 1 means “Whenever this creature attacks, defending player sacrifices a permanent.”
No other card is named in this ruling.
#5November 12, 2019· Wizards of the Coast
If a creature is attacking a planeswalker, the planeswalker’s controller is the defending player.
No other card is named in this ruling.
#6November 12, 2019· Wizards of the Coast
If a creature attacks a planeswalker and that planeswalker leaves the battlefield, the creature continues to attack. If it’s blocked, it’ll deal combat damage as normal, but if it’s unblocked, it won’t deal any combat damage.
No other card is named in this ruling.
#7November 12, 2019· Wizards of the Coast
Slivdrazi Monstrosity’s ability affects itself, causing it to become colorless and gain devoid and annihilator 1 while it’s on the battlefield. While not on the battlefield, it’s all colors.
No other card is named in this ruling.