Cheapest priced copy (Fate Reforged): $0.99 at Card Kingdom, near mint, their price list as of .
Warden of the First Tree 
Creature — Human · 1/1 · Mythic · Fate Reforged · #143
{1}{W/B}: This creature becomes a Human Warrior with base power and toughness 3/3.
{2}{W/B}{W/B}: If this creature is a Warrior, it becomes a Human Spirit Warrior with trample and lifelink.
{3}{W/B}{W/B}{W/B}: If this creature is a Spirit, put five +1/+1 counters on it.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 143 | Mythic | $0.99 | $0.99 |
| Fate Reforged Promos | 143s | Mythic | — | $0.99 |
4 rulings from Wizards of the Coast
- 24 November 2014The first ability overwrites any previous effects that set the creature's base power and toughness to specific values. Any power- or toughness-setting effects that start to apply after the first ability resolves will overwrite this effect.
- 24 November 2014Effects that modify Warden of the First Tree's power or toughness, such as the one created by Titanic Growth, will apply to Warden of the First Tree no matter when they started to take effect. The same is true for any +1/+1 counters on Warden of the First Tree and effects that switch its power and toughness.
- 24 November 2014Neither the first nor the second ability has a duration. If one of them resolves, it will remain in effect until Warden of the First Tree leaves the battlefield or some subsequent effect changes its characteristics.
- 24 November 2014The first and second activated abilities cause Warden of the First Tree to lose any other creature types it has. It retains any card types or supertypes it may have.