Whenever one or more Halflings you control attack a player, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
Flood the board with cheap Halflings, swing wide each turn, and bank Food tokens off your attacks. Use those Foods as artifact fodder for sacrifice/proliferate/lifegain payoffs while you grow your team with anthems and counters until your go-wide attack ends the game.
Cheap two-mana commander that comes down early and snowballs an aggressive board
Generates value (Food) just by doing what aggro wants to do—attacking
Mono-green gives strong ramp, big creatures, and reliable Halfling/tribal support from LOTR sets
Doubles as an artifact-token engine for Food-matters and sacrifice subthemes
Mono-green has no real interaction—weak to board wipes, counterspells, and removal
Halfling tribe is shallow and mostly small-bodied, so it folds to a single sweeper
Foods only trigger on attacks, so the engine stalls if you can't profitably attack
Lacks reach/evasion to close fast games against ramp/combo decks