Modified creatures you control have trample. (Equipment, Auras you control, and counters are modifications.)
Whenever a modified creature you control deals combat damage to a player, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Build a board of modified creatures (counters, Equipment, Auras), give them trample via Kodama, and crash in for combat damage. Each connection ramps you a basic land, snowballing your mana into ever-larger threats and overwhelming the table. You aim to go wide and tall, then convert the explosive ramp into a finisher or just bash players out.
Free ramp on every combat hit accelerates you far ahead on mana
Trample makes counter-pumped creatures push through chump blockers reliably
Mono-green gives access to the deck's best counter and Aura payoffs
Cheap commander (3 MV) that comes down early and survives removal-light tables
Mono-green lacks interaction, card-draw consistency, and removal flexibility
Relies on combat damage—board wipes and fliers/Fog effects stall the engine
Slow to close if your creatures get repeatedly blocked or removed
Vulnerable to counter-hate (Solemnity) and Equipment/Aura removal
A land that grows with counters, becoming a modified, trampling, ramping threat.
Add counter-doublers (Hardened Scales, Branching Evolution, Doubling Season) and proliferate effects to maximize both board power and Kodama's ramp. Improve interaction and protection with green's best—Heroic Intervention, Snake's Disdain, and fast mana like Sol Ring/Carpet of Flowers—then cap with an explosive finisher such as Craterhoof Behemoth or Triumph of the Hordes for a poison kill.