Kind of like a rebound effect, but much better
Originally conceived as part of a cycle of boons (cards which give you three of something for one mana), Richard Garfield was convinced by friends that Ancestral Recall was too powerful to be a common
I think the best thing to do is lean into the dinosaur synergy, while also making it easier to trigger Pantlazas discover X every single turn
(Don't lay your noncreatures out at this point unless they're cards you are planning to play as soon as you have that much manafor example, you will generally cast a [autocard]Tolarian Scholar[/autocard] on turn three, whereas [autocard]Murder[/autocard] isn't usually a turn-three play.) A good "mana curve" of creatures is crucial to a successful Sealed deck
Remember that it applies to your creatures too
But its ability makes all your changelings cost less mana by default, even if its not in play, and thats huge