Cheapest priced copy (Commander Masters): $0.49 at Card Kingdom, near mint, their price list as of .
Sparkshaper Visionary 
Creature — Human Wizard · 0/5 · Rare · Commander Masters · #726
At the beginning of combat on your turn, choose any number of target planeswalkers you control. Until end of turn, they become 3/3 blue Bird creatures with flying, hexproof, and "Whenever this creature deals combat damage to a player, scry 1." (They're no longer planeswalkers. Loyalty abilities can still be activated.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 726 | Rare | $0.49 | — |
| Commander Masters | 758 | Rare | $0.49 | $0.99 |
2 rulings from Wizards of the Coast
- 28 July 2023A planeswalker that becomes a creature due to Sparkshaper Visionary's ability can't attack unless you've controlled it continuously since your turn began.
- 28 July 2023Once Sparkshaper Visionary's ability has resolved, each of the chosen planeswalkers are no longer planeswalkers for the rest of the turn. They don't lose any loyalty counters or abilities, and you can still activate their loyalty abilities if you haven't done so yet this turn. They don't lose loyalty if they're dealt damage while they're not planeswalkers.