A Reddit user named Com4nde_R pointed out another method involving a teammate to exploit the Hand of Midas bug.
To reproduce the bug, a player must pass their Hand of Midas, while it's on cooldown, to a teammate with the item on cooldown. After retrieving the item, the cooldown timer resets, allowing the artifact to be used again immediately.
In a recent mini-patch, the Dota 2 developers fixed a critical bug with Hand of Midas, but this new method of exploiting the item was discovered shortly after.