Hidden Cove and Rapunzel also add to the Will Power of your characters, which will come in handy so you can keep them around long enough to make an impact
My theory on Sol Ring (and ramp in general, for that matter) is either we want it all the time or we should work around it, because if it means 10% of our deck is dead after our opening hand, it's probably not worth it
Being printed at rare is huge here
I wish there was a way to make a bunch of Treasure tokens so all of this could be a little more affordable
Creature - Knight Angel Karmic Guide Flying, protection from black Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When this creature enters, return target creature card from your graveyard to the battlefield
Fairness: Prevents "marked cards" in competitive play