Cheapest priced copy (Born of the Gods): $0.59 at Card Kingdom, near mint, their price list as of .
Nessian Wilds Ravager 
Creature — Hydra · 6/6 · Rare · Born of the Gods · #129
Tribute 6 (As this creature enters, an opponent of your choice may put six +1/+1 counters on it.)
When this creature enters, if tribute wasn't paid, you may have this creature fight another target creature. (Each deals damage equal to its power to the other.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.59 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Born of the Gods | 129 | Rare | $0.59 | $0.79 |
| Born of the Gods Promos | 129★ | Rare | — | $0.79 |
6 rulings from Wizards of the Coast
- 1 February 2014Players can’t respond to the tribute decision before the creature enters the battlefield. That is, if the opponent doesn’t pay tribute, the triggered ability will trigger before any player has a chance to remove the creature.
- 1 February 2014The triggered ability will resolve even if the creature with tribute isn’t on the battlefield at that time.
- 1 February 2014If the triggered ability has a target, that target will not be known while the creature spell with tribute is on the stack.
- 1 February 2014The choice of whether to pay tribute is made as the creature with tribute is entering the battlefield. At that point, it’s too late to respond to the creature spell. For example, in a multiplayer game, opponents won’t know whether tribute will be paid or which opponent will be chosen to pay tribute or not when deciding whether to counter the creature spell.
- 1 February 2014If the opponent pays tribute, the creature will enter the battlefield with the specified number of +1/+1 counters on it. It won’t enter the battlefield and then have the +1/+1 counters placed on it.
- 18 April 2017For effects that check which player put counters on the entering creature, the player chosen to pay tribute puts those counters on it, not the creature’s controller.