Cheapest priced copy (Final Fantasy Commander): $7.99 at Card Kingdom, near mint, their price list as of .
Warrior's Resolve 
Enchantment · Rare · Final Fantasy Commander · #465
Creatures you control have training. (Whenever a creature you control attacks with another creature with greater power, put a +1/+1 counter on the creature with lesser power.)
At the beginning of your end step, if you control a creature with a +1/+1 counter on it that attacked this turn, draw a card.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $2.99 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy Commander | 465 | Rare | $7.99 | $2.99 |
3 rulings from Wizards of the Coast
- 2 October 2025A creature's training ability triggers only when both that creature and a creature with greater power are declared as attackers. Increasing a creature's power after attackers are declared won't cause a training ability to trigger.
- 2 October 2025Once a creature's training ability has triggered, destroying the other attacking creature or reducing its power won't stop the creature with training from getting a +1/+1 counter.
- 2 October 2025Warrior's Resolve's last ability checks at the moment it would trigger to see if any creatures you currently control with one or more +1/+1 counters on them attacked this turn. If none did, the ability won't trigger at all. It doesn't matter if the creatures had +1/+1 counters on them when they attacked.