Cheapest priced copy (March of the Machine): $0.35 at Card Kingdom, near mint, their price list as of .
Xerex Strobe-Knight 
Creature — Human Knight · 2/2 · Uncommon · March of the Machine · #85
Flying, vigilance
{T}: Create a 2/2 white and blue Knight creature token with vigilance. Activate only if you've cast two or more spells this turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 85 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 14 April 2023Xerex Strobe-Knight will count any spells you’ve cast this turn. It doesn’t matter if those spells resolved, didn’t resolve, were countered, or are still on the stack.