Nontoken creatures you control have ": Create a token that's a copy of target token you control that entered this turn."
Flood the board with token copies, then exponentially multiply them by tapping your nontoken creatures to copy tokens that entered this turn. Make a few big tokens early, then chain copies into a massive go-wide army for a single alpha strike. Ghired turns every token into a snowball that overwhelms the table by turn five or six.
Explosive, exponential token generation that can produce dozens of bodies in one turn
Cheap three-mana commander with haste lets you start copying immediately
Copies the best printed token in play, including powerful ETB tokens or huge fatties
Naturally wide boards punish slow removal and reward overrun effects
Heavily reliant on having both nontoken creatures and tokens that entered the same turn
Vulnerable to board wipes that erase the whole token army instantly
The combo loop needs untapped creatures, so a single Cyclonic Rift sets you back hard
Slow to close if you lack a finisher to convert the wide board into damage
Every token entering pumps your whole team, snowballing alongside Ghired's copies.
Add token doublers (Mondrak, Anointed Procession, Parallel Lives) and ETB token engines to maximize Ghired's copy loops, then include untap enablers to combo off in one turn. Prioritize a couple of reliable finishers like Craterhoof Behemoth and Triumph of the Hordes so wide boards convert to wins. Tighten the mana base with fast ramp (Sol Ring, Rampant Growth, dorks) and add protection like Heroic Intervention to guard against the board wipes that prey on token decks.
Legendary Creature — Human Shaman
: Create a token that's a copy of target token you control that entered this turn."