There seems to be confusion that Ob triggers for each creature your opponents control, but thats not the case because the damage dealt by your opponents creatures usually results in more than one life lost per player
Others are probably never going to be relevant, like The Dominion Bracelet
Mindslicer None of your opponents really need hands, right
Equip Artifact - Equipment Life of the Party First strike, trample, haste Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the number of creatures you control
The Most Valuable Cards in Edge of Eternities Edge of Eternities Per my usual approach, I will primarily focus on normal, non-foil printings in the set because these are the most common versions of the card and can be found in play boosters
Your other mana sources come from some choice mana rocks in Sol Ring and Emerald Medallion, plus some thematically appropriate mana dorks: Nightshade Dryad and Poison Dart Frog