Triarch Stalker

Deathtouch

At the beginning of combat on your turn, choose an opponent at random. This creature attacks that player this combat if able.

Whenever this creature deals combat damage to a player, that player loses half their life, rounded down.

At the beginning of your upkeep, choose target opponent. This turn, that player can't cast spells or activate abilities and plays with their hand revealed. You may play lands and cast spells from that player's hand this turn.

Trample, haste

When this creature enters, target opponent creates three 0/1 white Goat creature tokens.

At the beginning of combat on your turn, any opponent may sacrifice a creature of their choice. If a player does, tap this creature, you gain 3 life, and you draw a card.

Menace

Other Orcs and Goblins you control have menace.

At the beginning of combat on your turn, amass Orcs 2. (Put two +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

At the beginning of combat on your turn, you may have target Vampire get +2/+0 until end of turn.

Phaeron — Whenever one or more artifact cards leave your graveyard, create two 2/2 black Necron Warrior artifact creature tokens.

Grand Strategist — At the beginning of combat on your turn, another target artifact creature you control gets +2/+2 and gains menace until end of turn.