Looking at an obvious example from Old School, The Deck, which runs four Jayemdae Tomes, Ancestral Recall, Timetwister, Braingeyser, and a Library of Alexandria, its a powerhouse of card advantage
I know I would
Cardsmith MTG lets you turn a concept into an actual-looking card face quickly, so you can stop arguing with your brain and start testing whether your idea is fun, broken, or fun because its broken. Once your design looks the way you want, PrintMTG can print it as a high-quality proxy card you can shuffle, sleeve, and hand to friends without needing to explain, Just imagine this is a real card. What Cardsmith MTG is (and what its not) Cardsmith MTG is best thought of as a visual card concept tool
You can add undying, flying, infect, and more