Every single card ever submitted to Professional Sports Authenticator gets logged in their database, and when you sort by total submissions, the resulting list is one of the most honest documents in the hobby
Elspeth, Gideon, and Ajani are good planeswalkers to have among your creature-heavy decks, and good examples are Gideon Jura, Gideon, Ally of Zendikar, Elspeth, Knight-Errant, and Ajani, Adversary of Tyrants
Zapdos EX 6
Does your deck reliably manipulate the top of its library (via draw, Scry, Surveil, or some other method) to help smooth your draws so you hit the Lands and other mana sources you need
If you're starting from zero, the best choice is a booster box or ETB from a modern set sold near MSRP with strong chase cards