Cheapest priced copy (Fate Reforged): $0.35 at Card Kingdom, near mint, their price list as of .
Wandering Champion 
Creature — Human Monk · 3/1 · Uncommon · Fate Reforged · #29
Whenever this creature deals combat damage to a player, if you control a blue or red permanent, you may discard a card. If you do, draw a card.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 29 | Uncommon | $0.35 | $0.49 |
| The List | UMA-42 | Common | $0.35 | — |
| Ultimate Masters | 42 | Common | $0.35 | $0.49 |
3 rulings from Wizards of the Coast
- 7 December 2018If you don’t control a blue or red permanent as Wandering Champion’s ability resolves, you can’t discard and draw a card. The blue or red permanent you control as the ability resolves doesn’t have to be one you controlled as the ability triggered.
- 7 December 2018Wandering Champion’s ability doesn’t trigger if you don’t control a blue or red permanent immediately after it deals combat damage to a player.
- 7 December 2018If the only blue or red permanent you control is a creature that’s dealt lethal damage at the same time as Wandering Champion deals combat damage, Wandering Champion’s ability triggers.