So how the heck is the cohort Lyren supposed to work?
You display him to look at the location deck, then he gets shuffled into you deck.
But if you use it's power during a combat, you can get 1d8 added on, you you want to use it's power during your combat.
In addition, while it's displayed, you can recharge another card to put it back in your hand instead of shuffling it away?
When you display a card it stays until an action removes it. It does not count as part of your hand.
With Lyren, you can recharge a card in your hand to return it (allowing you to use the display ability again) or you can shuffle it into your library for the combat bonus.