Somberwald Beastmaster 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

When this creature enters, create a 2/2 green Wolf creature token, a 3/3 green Beast creature token, and a 4/4 green Beast creature token. Creature tokens you control have deathtouch. (Any amount of damage they deal to a creature is enough to destroy it.)

Complete guide

Somberwald Beastmaster is a high-impact creature that immediately creates a formidable board presence by summoning three different companions. Not only does it populate your battlefield, but it also transforms every token you own into a lethal threat by granting them deathtouch.

One Ranger, Three Beasts

When Somberwald Beastmaster enters the battlefield, its triggered ability puts three separate tokens onto the battlefield: a 2/2 Wolf, a 3/3 Beast, and a 4/4 Beast. Additionally, as long as the Beastmaster is on the battlefield, its static ability ensures that every creature token you control has deathtouch, regardless of when that token was created.

Step-by-Step Resolution

First, Somberwald Beastmaster is cast and enters the battlefield. Its triggered ability is put onto the stack. When that ability resolves, you create the 2/2 Wolf, the 3/3 Beast, and the 4/4 Beast simultaneously. Immediately upon their arrival, the Beastmaster's static ability applies to them (and any other tokens you already had), giving them deathtouch.

Important Interactions

It is important to remember that Somberwald Beastmaster itself is not a token; therefore, it does not have deathtouch from its own ability. Also, if Somberwald Beastmaster leaves the battlefield, your tokens will immediately lose deathtouch unless another effect is providing it. The tokens themselves, however, remain on the battlefield.

When to Deploy

This card is an excellent defensive tool to stabilize a board, as it provides four blockers, three of which can trade with any attacker regardless of its toughness. It is also a powerful offensive finisher when paired with effects that grant trample, as deathtouch allows a single point of damage to be lethal, letting the rest carry over to the player.

Interaction examples

Instant Army Reinforcement

Wolf

Beast

Upon entering, Somberwald Beastmaster creates one Wolf and two different Beast tokens. Because the Beastmaster is on the battlefield, all three of these new creatures immediately gain deathtouch, allowing them to destroy any creature they damage in combat.

Lethal Overrun

Craterhoof Behemoth

If you have Somberwald Beastmaster and its tokens on the field and then play Craterhoof Behemoth, your tokens gain trample and a massive power boost. Because they have deathtouch, you only need to assign 1 damage to each blocker to 'destroy' it, allowing the maximum possible trample damage to hit your opponent.

Sprouting Death

Avenger of Zendikar

If you already control Somberwald Beastmaster and then play Avenger of Zendikar, all the Plant tokens created by the Avenger will enter the battlefield with deathtouch. This turns a swarm of 0/1 plants into a deadly wall of blockers that no one will want to attack into.

Guide written with AI from the official text and rulings. Official English text prevails.