unicorn cards mtg MTGNexus offering blessings to anyone they encounter. MTG - Black Mountain Unicorn

Well, they care about creature cards entering the graveyard

Its also really easy to break, as all you need is two creatures that can flicker each other, which not only produces infinite +1/+1 counters on your creatures, but also scales firebending up to make infinite mana when Zuko attacks

Loran of the Third Path Loran of the Third Path is a no-brainer

New additions from MH3 can potentially give them the power boost they need to compete again.

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Ashiok, Dream Render happens to be one of the three best, as Commander is a format ripe with tutor effects