Virtue of Loyalty can give you a token at instant speed and then a massive boost to all your creatures later
Its primarily for the removal mode, which is why it features high on this list
The biggest factor is that he also triggers Genesis Chamber, which once again gains us life
The issue is that fight cards dont synergize well with each other
(In other words, you can't sacrifice the same creature to satisfy multiple devour abilities.) All creatures devoured this way are sacrificed at the same time
I do feel though they may be viable Standard and Extended options, but because of the extraordinary power-level of Extended right now, I think that perhaps there will be too many unfavorable match-ups, especially the modified Elfball, numerous artifact combo decks, and maybe Zoo, but if the deck can be modified to a state where it is a tenable Extended option, that's terrific in my opinion