Cheapest priced copy (Guilds of Ravnica): $0.49 at Card Kingdom, near mint, their price list as of .
Camaraderie 
Sorcery · Rare · Guilds of Ravnica · #157
You gain X life and draw X cards, where X is the number of creatures you control. Creatures you control get +1/+1 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Guilds of Ravnica | 157 | Rare | $0.49 | $1.49 |
| New Capenna Commander | 334 | Rare | $0.59 | — |
| The List | GRN-157 | Rare | $0.59 | — |
| Starter Commander Decks | 219 | Rare | $0.49 | — |
| Secret Lair Drop | 7183 | Rare | $2.99 | $3.99 |
One ruling from Wizards of the Coast
- 5 October 2018The second part of Camaraderie's effect affects only creatures you control at the time it resolves. Creatures you begin to control later in the turn won't get +1/+1.