Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to a creature may become lethal if Eye of Nidhogg becomes attached to it or unattached from it during that turn
However, this is a bummer, because sometimes the Melded pairs trigger their Melding with a particular time
The best way to mitigate the card disadvantage is to incorporate cards that can provide value from the graveyard, like cards with flashback or jump-start
Although the deck itself isnt great on its own, the guaranteed cards can be useful in deck brewing if your options are limited
On the obvious other side of things, Elemental Bond cares about creatures with at least three power, while Garruks Uprising needs at least four power
The type of collection I have I collect to build I go from having 6 to 15 decks assembled for EDH - this fluctuates a lot as sometimes I will build a deck, play it 5 times, and disassemble it again within a week