Then you gain 3 life if that player has more life than each other player
Finally, Red + Green Burn tends to punish what Green hates, namely all-things winged or artificial (Clan Defiance, Cindervines, Ruric Thar, the Unbowed, etc.), or staples Burn onto already-useful effects (Vengeful Rebirth, Exploding Borders, etc.)
A creature with just the Bardic Inspiration ability is usually a solid playable, but it does come with the downside of not doing anything with a +2/+2 boost doesnt matter -- like if you have to play defense, or dont have another creature
You can't tap the land for mana unless it's already in play, and the Amulet says that it untaps as it enters the battlefield
It gains lifelink until end of turn
Learn only applies when lessons are in your sideboard and you want to fetch them