The translation up to now on many trusted websites for Archie’s Trump Card is as follows:
Archie’s Trump Card - Trainer
You can only play this card if it’s the only card in your hand.
Put a [W] Pokemon from your discard pile onto your Bench, then draw 5 cards.
You may play only 1 Supporter card during your turn (before your attack).
What was pointed out by Pokebeach.com is:
(Note: Yes, you can play /any/ [W] Pokemon to your Bench. It doesn’t say Basic Pokemon. It only says [W] Pokemon.) - Does this mean that you theoretically can get a Primal K without Mega Evolving. Thanks!