Braulios's power and toughness are each equal to the number of lands you control.
Whenever Braulios attacks, draw a card, then you may put a land card from your hand onto the battlefield.
Ramp hard, flood the board with lands, and turn Braulios into a massive *-power beater that draws cards and free-drops extra lands every time he swings. You play out cheap ramp and land-fetch early, deploy Braulios around turn 4-5, and snowball card advantage plus board size until you crash in for lethal or grind opponents out with sheer resources.
Self-sufficient card advantage and free land drops on every attack
Scales naturally with lands, getting huge in any landfall/ramp shell
Mono-green ramp makes for explosive starts and consistent mana
Cheap to recast and refuels your hand to fight through interaction
P/T tied to lands makes him vulnerable to mass land destruction or Armageddon
Mono-green struggles with interaction, flyers, and removing problem permanents
Needs to attack to generate value, so blockers and pillow-fort slow him down
Removal-heavy tables can keep recasting him expensive and tempo-negative