Cheapest priced copy (Adventures in the Forgotten Realms): $0.79 at Card Kingdom, near mint, their price list as of .
Paladin Class 
Enchantment — Class · Rare · Adventures in the Forgotten Realms Promos · #29p
(Gain the next level as a sorcery to add its ability.)
Spells your opponents cast during your turn cost {1} more to cast.
{2}{W}: Level 2
Creatures you control get +1/+1.
{4}{W}: Level 3
Whenever you attack, until end of turn, target attacking creature gets +1/+1 for each other attacking creature and gains double strike.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.79 to $18.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Adventures in the Forgotten Realms | 29 | Rare | $0.79 | $2.49 |
| Adventures in the Forgotten Realms Promos | 29a | Rare | — | $18.99Out of stock |
| Adventures in the Forgotten Realms Promos | 29p | Rare | $3.99Out of stock | $11.99Out of stock |
| Adventures in the Forgotten Realms Promos | 29s | Rare | — | $2.99Out of stock |
9 rulings from Wizards of the Coast
- 23 July 2021Each Class starts with only the first of three class abilities. As the first level ability resolves, the Class becomes level 2 and gains the second class ability. As the second level ability resolves, the Class becomes level 3 and gains the third class ability.
- 23 July 2021Additional costs from Paladin Class cards are cumulative. For example, if you control two Paladin Class cards, spells your opponents cast cost {2} more to cast.
- 23 July 2021You can multiclass or even control multiple Class enchantments of the same class. Each Class permanent tracks its own level separately.
- 23 July 2021If Paladin Class is level 3 and you attack with exactly one creature, it won't get a power and toughness bonus, but it will get double strike.
- 23 July 2021Some Class cards have an effect that increases when more are under your control. For example, if you have multiple Barbarian Class cards, you roll that many additional dice and ignore that many of the lowest rolls.
- 23 July 2021Each Class has five abilities. The three in the major sections of its text box are class abilities. Class abilities can be static, activated, or triggered abilities. The other two are level abilities, one activated ability to advance the Class to level 2 and another to advance the Class to level 3.
- 23 July 2021Gaining a level won't remove abilities that a Class had at a previous level.
- 23 July 2021You can't activate the first level ability of a Class unless that Class is level 1. Similarly, you can't activate the second level ability of a Class unless that Class is level 2.
- 23 July 2021Gaining a level is a normal activated ability. It uses the stack and can be responded to.