agreed. the fact that it is cheaper makes it quite different though, can target 8 mana minions.
mirage caller can target non-DR minions, which is the main point and, imo, makes mirage caller generally better.
please note that mirage caller is good for combos, but not for resurrect. this, after dying, would resurrect into the original minion.
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Spirit of the Dead adds cards with original stats, not 1/1.
2
RNGesus take the wheel