Hidden in the sealed chamber beneath Mirage Tower (requires Acro Bike and a level 100 Pokemon with Ancient Power). What it does: When held by a Pokemon with a time-based evolution (Espeon, Umbreon, Celebi, Dialga), it reverses the battle priority math. The holder’s moves gain +2 priority and ignore Protect/Detect 50% of the time. Why it’s the best: In Hyper Emerald 55 , bosses spam status moves and protect stalls. The Chrono Lens turns Umbreon into an unkillable wall that moves first every turn, or turns Celebi into a healing machine that cannot be interrupted. It breaks the game’s AI logic.
In Hyper Emerald, difficulty spikes are common. You need a starter that can carry you through the early game until you can build a diverse team. pokemon hyper emerald 55 lost artifacts best
Umbreon @ Chrono Lens