Sinclair's Copy is already one of the highest-skill abilities. Similarly, an item that copies base abilities would force users of Mimicry to pick slots and targets based on the enemy team's composition.
Haze imbuing 3 can temporarily steal Vyper's slide passive (Slither).
Lash copies a vindicta 1 (Stake) before a slam.
Pocket copies Shiv to add damage to his combo.
