Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

As long as Camel is attacking, prevent all damage Deserts would deal to Camel and to creatures banded with Camel.

When Quarry Hauler enters the battlefield, for each kind of counter on target permanent, put another counter of that kind on it or remove one from it.

Solitary Camel has lifelink as long as you control a Desert or there is a Desert card in your graveyard. (Damage dealt by this creature also causes you to gain that much life.)

When Supply Caravan enters the battlefield, if you control a tapped creature, create a 1/1 white Warrior creature token with vigilance.

When Wretched Camel dies, if you control a Desert or there is a Desert card in your graveyard, target player discards a card.