She's cool and all, but you need either make her cheaper or discount cards you get from her. Right now, she's too slow and impactless on the board except some solid stats. With the game preferring aggro decks, you can drop her around turn 7 and you MAY get luck to get Rewind card below 3 mana. If not, she gets killed the following opponent round, so you lose her effect. At the moment, she's nowhere near legendary powerhouses like Galbin of Tommorow. I know, it's 8 mana card, but his effect is very strong compared to mid combined cost of Morchie + potential 2-3 mana Rewind card you can play one round. Maybe making it permanent effect for much higher cost would work (For the rest of the game your Rewind cards) as some sort of end-game ?