9 Mickey Mouse, True Friend - $52.42 A Card With No Text One draw for visiting the parks or going for a meet and greet with Disney characters is getting their signature
Worldspine Wurm, Wurmcoil Engine, and Impervious Greatwurm do this the best, though
Admiral Beckett Brass Admiral Brass, Unsinkable Adwal, Breaker of Chains Breeches, Brazen Plunderer Breeches, Eager Pillager Breeches, the Blastmaker Captain Howler, Sea Scourge Captain Lannery Storm Captain Lannery Storm Captain N'ghathrod Captain Ripley Vance Captain Storm, Cosmium Raider Captain Vargus Wrath Dargo, the Shipwrecker Don Andres, the Renegade Edward Kenway Francisco, Fowl Marauder Ghost of Ramirez DePietro Kari Zev, Skyship Raider Malcolm, Alluring Scoundrel Malcolm, Keen-Eyed Navigator Malcolm, the Eyes Mary Read and Anne Bonny Ragavan, Nimble Pilferer Ragavan, Nimble Pilferer Ramirez DePietro Ramirez DePietro, Pillager The Grim Captain Xavier Sal, Infested Captain Zara, Renegade Recruiter
You can do that with one card pretty easily and so for Exploration to be worth it you need to really take advantage of the mana or two you save and the slightly earlier ramp it can bring