Ravenous Slime — ruling 1

A token creature can die just like a nontoken creature before ceasing to exist. Ravenous Slime can replace this by exiling the token.

Ravenous Slime — ruling 2

The exiled creature's last known existence on the battlefield is checked to determine its power.

Ravenous Slime — ruling 3

If Ravenous Slime dies at the same time as an opponent's creatures, the opponent's creatures are exiled.

Ravenous Slime — ruling 4

If more than one replacement effect tries to change where a dying creature ends up, that creature's controller chooses which effect applies. For example, if two players control a Ravenous Slime, a creature controlled by a third player will be exiled by the Ravenous Slime of that third player's choice, and the other Ravenous Slime won't get +1/+1 counters.

Ravenous Slime — ruling 5

If an opponent's commander would die, that player may choose to put it into the command zone from exile after Ravenous Slime's replacement effect has been applied and it has received the +1/+1 counters.

Ravenous Slime — ruling 6

Once a creature with power 3 or greater has blocked this creature, changing the power of the blocking creature won't cause this creature to become unblocked.

Ravenous Slime : règles, fonctionnement et interactions (MTG)

Ravenous Slime 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

This creature can't be blocked by creatures with power 2 or less. If a creature an opponent controls would die, instead exile it and put a number of +1/+1 counters equal to that creature's power on this creature.

How it works : Ravenous Slime

Original English text — Wizards of the Coast / Scryfall

#1July 13, 2018· Wizards of the Coast
A token creature can die just like a nontoken creature before ceasing to exist. Ravenous Slime can replace this by exiling the token.
No other card is named in this ruling.
#2July 13, 2018· Wizards of the Coast
The exiled creature's last known existence on the battlefield is checked to determine its power.
No other card is named in this ruling.
#3July 13, 2018· Wizards of the Coast
If Ravenous Slime dies at the same time as an opponent's creatures, the opponent's creatures are exiled.
No other card is named in this ruling.
#4July 13, 2018· Wizards of the Coast
If more than one replacement effect tries to change where a dying creature ends up, that creature's controller chooses which effect applies. For example, if two players control a Ravenous Slime, a creature controlled by a third player will be exiled by the Ravenous Slime of that third player's choice, and the other Ravenous Slime won't get +1/+1 counters.
No other card is named in this ruling.
#5July 13, 2018· Wizards of the Coast
If an opponent's commander would die, that player may choose to put it into the command zone from exile after Ravenous Slime's replacement effect has been applied and it has received the +1/+1 counters.
No other card is named in this ruling.
#6July 13, 2018· Wizards of the Coast
Once a creature with power 3 or greater has blocked this creature, changing the power of the blocking creature won't cause this creature to become unblocked.
No other card is named in this ruling.