Whenever one or more Elves you control attack, they gain deathtouch until end of turn.
Each creature you control has "Whenever a mana ability of this creature resolves, put a number of +1/+1 counters on it equal to the amount of mana this creature produced. This ability triggers only once each turn."
Build a wide Elfball board, use mana dorks and elves that tap for multiple mana to snowball +1/+1 counters every turn, then swing with a deathtouch-laden army that trades up against any blocker. You ramp explosively early, grow your creatures into threats while generating obscene mana, and convert that mana into game-ending payoffs or just a lethal alpha strike.
Turns every mana dork into a growing threat, so ramp is never a dead draw late
Deathtouch on attacking Elves makes combat utterly one-sided, deterring blocks
Explosive mana acceleration enables huge X-spells and overrun finishers
Plays well with the deep, well-supported Elf tribal pool in BG
Heavily reliant on the commander; board wipes reset your counter engine and board state
Vulnerable to graveyard and creature hate that punishes a go-wide strategy
Counters and growth do nothing through fliers or evasion without help
Slow to close if the deathtouch alpha strike is stalled by mass removal or fog
Legendary Creature — Elf Warrior
