Unless youre planning to play historic formats, which is extremely difficult to do if youre not willing to spend real money as a beginner, its better to stay away from older sets
Circle of Life allows you to do both, and being a Sing Together song, you don't even have to pay Ink to bring a character back, and that character doesn't come in exerted and immediately in danger either
Moritte of the Frost has two supertypes and here's the big one, changeling which gives it a subtype that matches every creature type other cards refer to
You see, they make it so that enemy creatures that die get exiled instead, but thats only the beginning of it
With three cards giving alternate win conditions, and the opportunity for commander damage or regular combat wins, well have no trouble succeeding with this deck
You may cast that card