The best way is to craft cards directly with wildcards
+1/+1 Counters The Astonishing Ant-Man 0.7%inclusion 234 decks 32K decks Captain America, Team Leader 0.3%inclusion 232 decks 73K decks Bruce Banner 0.2%inclusion 198 decks 82.9K decks T'Challa, the Black Panther 0.2%inclusion 126 decks 73K decks Doctor Doom, King of Latveria 0.2%inclusion 110 decks 73K decks Top Commanders The Wise Mothman 2.1%inclusion 3.41K decks 162K decks Ms
Sunkern Secluded Springs Common Element Grass Stage Basic HP 50 Weakness Fire Retreat 1 Artist
Even if you're not playing a Kindred theme that will just take Radagast out of consideration entirely, you will eventually hit a happenstance of creatures in play that will have you putting creature cards on the bottom, not to mention the likelihood that you'll pull all non-creatures
In Commander, however, where fast mana is absolutely everywhere, this card can be played surprisingly early