Cheapest priced copy (Magic Origins): $0.35 at Card Kingdom, near mint, their price list as of .
Citadel Castellan 
Creature — Human Knight · 2/3 · Uncommon · Magic Origins · #213
Vigilance (Attacking doesn't cause this creature to tap.)
Renown 2 (When this creature deals combat damage to a player, if it isn't renowned, put two +1/+1 counters on it and it becomes renowned.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic Origins | 213 | Uncommon | $0.35 | $0.49 |
| The List | ORI-213 | Uncommon | $0.35 | — |
3 rulings from Wizards of the Coast
- 22 June 2015If a renown ability triggers, but the creature leaves the battlefield before that ability resolves, the creature doesn’t become renowned. Any ability that triggers “whenever a creature becomes renowned” won’t trigger.
- 22 June 2015Renown won’t trigger when a creature deals combat damage to a planeswalker or another creature. It also won’t trigger when a creature deals noncombat damage to a player.
- 22 June 2015If a creature with renown deals combat damage to its controller because that damage was redirected, renown will trigger.