Lysandre's Trump Card is a Trainer card from Phantom Forces. It will soon be officially banned from all sanctioned tournaments in the TCG as it has created an "unbalanced" playing environment.
The ban will take into effect starting June 15 in most countries, but the ban will not take into effect in Japan until June 20. Odd... but Japan always has a weird TCG environment.
More about the card on Bulbapedia.