Cheapest priced copy (Battlebond): $0.49 at Card Kingdom, near mint, their price list as of .
Mindblade Render 
Creature — Azra Warrior · 1/3 · Rare · Tarkir: Dragonstorm Commander · #187
Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battlebond | 49 | Rare | $0.49 | $3.99 |
| Commander Legends: Battle for Baldur's Gate | 762 | Rare | $0.49 | — |
| Tarkir: Dragonstorm Commander | 187 | Rare | $0.49 | — |
2 rulings from Wizards of the Coast
- 8 June 2018Mindblade Render's ability triggers if a Warrior an opponent controls deals combat damage to another player who's also your opponent. You can't choose not to draw a card or lose 1 life if this happens.
- 8 June 2018Mindblade Render's ability triggers only once, regardless of how many opponents were dealt damage, how much damage they were dealt, or how many Warriors dealt damage.