When Gothmog enters, amass Orcs 1. (Put a +1/+1 counter 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.)
Creature tokens you control have deathtouch.
Flood the board with creature tokens that all gain deathtouch, turning even 1/1s into removal-proof blockers and pingers that trade up. Build a wide army, then close games with anthems, sacrifice payoffs, or a big alpha strike where every token threatens to kill whatever it touches.
Deathtouch on every token makes attacks and blocks brutally efficient, deterring combat and trading up against bombs
Mono-black gives access to the best tutors, removal, and recursion in the format
Pairs token swarms with deathtouch to enable safe, value-positive combat and pingers
Cheap commander that immediately adds a body via amass
Board wipes punish a go-wide token strategy hard
Relies on token generators staying on board; the deathtouch anthem does nothing without bodies
Single color limits access to flexible interaction and card advantage engines
Deathtouch is irrelevant against decks that win without combat (combo/storm)