Once hes summoned, you get to amass a five-strong Orc army, and mill five cards to the graveyard, then choose one creature card from that lot to play immediately on the battlefield, with no need to pay the Land cost
(Note: This basic concept is also true for distributors, the companies that buy Magic from us and sell it to the stores.) Once upon a time, a store just had one booster to buy for any one Magic set, so that's what they bought
Losing 2 life isnt nothing, especially in formats that rely on shock lands, but you dont mind
The omen part of this card provides land support if needed, but the lifegain trigger is the star here
Bedlam Reveler In some situations, [c]Bedlam Reveler[/c] can be really bad
Otherwise, you have an extra removal spell that may otherwise be a land