Jumping aces

The magician draws the 4 aces from the deck, and adds 4 indifferent cards to each ace forming 4 piles, each with an ace and three indifferent cards. One at a time the aces disappear from three packets and all come together in the 4th packet.
The necessary special cards are provided, and clear instructions in English.

• Special cards are Bicycle cards.
• A normal Bicycle deck of cards will also be required to perform the effect.