My proposal is to give it a "Draw a card" added to the text. The Priests have a 1 mana cost buff that adds 2 health and works well with inner fire, and lets them draw a card. Warriors have a 5 heal (armor) + draw a card.
Now many people tell me it would be overpowered, but it's hard to look at cards like Unleash the hounds, water elemental, fireball etc....... and not look at the Druid cards and think, wow expensive.
So for those people that feel this would be too overpowered, lets change it to be more like the choice cards for the druid. Keep it the same as it is, 0 mana , add 2 crystals OR add 1 crystal and draw a card.
This has to be fair. So you basically get a coin + card draw, or you can use it for mana acceleration like it is. I don't see this being overpowered at all. Not to mention Druids would finally have a staple card that doesn't feel like a ripoff of another class. When you see druid, you can think, what crazy mana acceleration is this guy going to pull.
Opens up more deck building maybe?