Like Overprotect its really a modal spell that is a combat trick or a saving spell, but thats great and sometimes you end up using both modes at once, and it feels great
In the game, you would encounter Articuno, Moltres, and Zapdos in these caves and you had one opportunity to catch them
These cards are easier to pull, so it's not worth crafting them
Blessing of Frost The concept of snow sorceries is pretty cool, and this lets you put +1/+1 counters, distributing any number of counters however you want is actually a fairly powerful ability, especially with certain doubler and adding cards and some creatures that potentially allow you to take turns for adding counters, so I think this does have potential, in the right kind of deck, probably something like Atraxa