Cheapest priced copy (The List): $0.69 at Card Kingdom, near mint, their price list as of .
Yosei, the Morning Star 
Legendary Creature — Dragon Spirit · 5/5 · Rare · Champions of Kamigawa · #50
Flying
When Yosei dies, target player skips their next untap step. Tap up to five target permanents that player controls.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.69 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Champions of Kamigawa | 50 | Rare | $2.29 | $44.99 |
| Iconic Masters | 39 | Rare | $0.99 | $4.99 |
| Modern Masters | 35 | Mythic | $1.49 | $8.99 |
| The List | IMA-39 | Rare | $0.69 | — |
5 rulings from Wizards of the Coast
- 17 November 2017If the player becomes an illegal target, the target permanents are tapped, but the player doesn't skip their untap step.
- 17 November 2017If more than one effect instructs a player to skip their next untap step, such as if Yosei dies more than once in a turn, that player skips that many untap steps. This is different from effects that state that something doesn't untap during an untap step.
- 17 November 2017If a permanent won't untap during its controller's next untap step, that effect waits to apply until its controller has an untap step that isn't skipped.
- 17 November 2017If any of the targets of Yosei's ability are illegal, they won't be tapped.
- 17 November 2017If all of the permanents targeted by Yosei's ability become illegal targets, nothing becomes tapped, but the target player still skips their untap step.