If a land enters the battlefield under your control, all your landfall abilities will trigger. If more than one landfall ability triggers at the same time, you can put those abilities on the stack in any order. It doesn't matter why the land is entering the battlefield. It could be your land play for the turn. It could be a spell or ability that tells you to put a land card onto the battlefield.

An homage to classic adventuring parties, the new party mechanic highlights four specific creature types: Cleric, Rogue, Warrior, and Wizard. The number of creatures in your party is how many of those roles you can fill with a creature you control. Each creature you control can fill a maximum of one role.

Threshold abilities care about you having seven or more cards in your graveyard. Some threshold abilities are, like the one Crypt Feaster has, a triggered ability. Whenever Crypt Feaster attacks, its ability checks to see if there are seven or more cards in your graveyard. If there are, the ability triggers and goes onto the stack. Players can respond to this ability with instants or activated abilities.

If you've got a Wizard in your party, you may be rewarded for casting certain spells that Wizards like: instants, sorceries, and even more Wizards.