Cheapest priced copy (Eldritch Moon): $0.35 at Card Kingdom, near mint, their price list as of .
Markov Crusader 
Creature — Vampire Knight · 4/3 · Uncommon · Eldritch Moon · #95
Lifelink
This creature has haste as long as you control another Vampire.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 95 | Uncommon | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 13 July 2016If Markov Crusader loses haste before the declare attackers step on the turn it enters the battlefield, it won't be able to attack. Once you've attacked with Markov Crusader, causing it to lose haste won't remove it from combat.