Cheapest priced copy (Foundations Commander): $0.69 at Card Kingdom, near mint, their price list as of .
Ripjaw Raptor 
Creature — Dinosaur · 4/5 · Rare · Ixalan · #203
Enrage — Whenever this creature is dealt damage, draw a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $0.69 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Commander | 224 | Rare | $0.69 | — |
| Game Night 2019 | 50 | Rare | $0.99 | — |
| The Lost Caverns of Ixalan Commander | 253 | Rare | $0.99 | — |
| Ixalan Promos | 203p | Rare | $16.99 | $22.99 |
| Ixalan Promos | 203s | Rare | — | $10.99 |
| Ixalan | 203 | Rare | $1.29 | $6.99 |
2 rulings from Wizards of the Coast
- 19 January 2018If lethal damage is dealt to a creature with an enrage ability, that ability triggers. The creature with that enrage ability leaves the battlefield before that ability resolves, so it won't be affected by the resolving ability.
- 19 January 2018If multiple sources deal damage to a creature with an enrage ability at the same time, most likely because multiple creatures blocked that creature, the enrage ability triggers only once.