Auvenos, the Skybearer

Other dwarves you control get +1/+1 and have haste.
Whenever a dwarf enters the battlefield under your control you may draw a card. If you do, discard a card.
Lands you control have "{t}, sacrifice this land: You may cast target instant or sorcery card from your graveyard this turn. If you do, exile it instead of putting it into your graveyard."