Moraug, Fury of Akoum Extra combats give aggressive decks the momentum necessary to end games and work particularly well with cards that reward you for attacking, like Brutal Hordechief
It's a consolation prize for your opponents, but a real gamepiece for you
Moltres's lack of Weakness combined with a healthy supply of ER, SER, healing items, and Item Finder to get them all back made for pretty easy wins
Now that 1/1 unblockable creature of yours can become a planeswalker, and thats interesting for ninja decks and ETB decks across formats
Llanowar Abomination might really like this card, but I'm not really a fan of ramping that late in to the game, especially in a graveyard-focused deck where you also have to be milling yourself and setting your board/hand up
Certainly playable and a nice early way to gain a tempo boost but ultimately it is your mana dictating the viability of this