gold pokemon card mewtwo EX - 103/108 Celebrate Mewtwo with a Pokémon

Those have not been replicated yet

Instant Color tag templates(None) Momentary Blink Exile target creature you control, then return it to the battlefield under its owner's control

A convention seller can organize cards by price band or character

Pair it with the [Once Per Turn] effect of "OP05-100 Enel" to create the ultimate [Rush] attacker, who can avoid whatever removal comes your way

Besides Rhystic Study and Mystic Remora, we have Candlekeep Sage and Teferis Ageless Insight, which both act as ways to reduce the time Cosima is in exile effectively turning her card draw up a notch and letting you send her away more often