Cheapest priced copy (Zendikar Rising): $0.49 at Card Kingdom, near mint, their price list as of .
Oran-Rief Ooze 
Creature — Ooze · 2/2 · Rare · Zendikar Rising Promos · #198p
When this creature enters, put a +1/+1 counter on target creature you control.
Whenever this creature attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $2.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 693 | Rare | $0.59 | — |
| Zendikar Rising Promos | 198p | Rare | $1.79 | $1.49 |
| Zendikar Rising Promos | 198s | Rare | — | $2.29Out of stock |
| Zendikar Rising | 198 | Rare | $0.59 | $0.49 |
| Zendikar Rising | 361 | Rare | $0.49 | $0.79 |
2 rulings from Wizards of the Coast
- 25 September 2020The group of creatures that receive a +1/+1 counter from Oran-Rief Ooze's second ability is determined only as the ability resolves. Other abilities that trigger on attacking (such as that of Paired Tactician) may add counters to creatures before that ability resolves.
- 25 September 2020Oran-Rief Ooze can be the target of its own first ability.