On his own, hes a value engine that turns spells into +1/+1 counters and mana
Creature - Warrior Elf Color tag templates(None) Cultivator of Blades Fabricate 2 (When this creature enters, put two +1/+1 counters on it or create two 1/1 colorless Servo artifact creature tokens.) Whenever this creature attacks, you may have other attacking creatures get +X/+X until end of turn, where X is this creature's power
The match is mine, and I turn out to have one of six 4-1 records

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Protecting ElshaElsha at level one, going wide at level two, and making ElshaElsha massive and double strikey to end the game, or to start to rebuild after a board wipe
If your big strike isnt lethal, choosing the second mode lets you hit for a ton and gain a bunch of life, setting you up to win the turn after