Both achieve the same endremoving a card from the opponents hand so they cant use itbut with different means
These last three also work as board wipes
While the price for these boosters has yet to be revealed, the contents are worse in every way than regular 'Play' boosters, with half as many cards, and no guaranteed rares
With limited in mind, Mirri, Weatherlight Duelist certainly wont mind you playing this card, and with other trample cards such as Ghalta, Primal Hunger and Goreclaw, Terror of Qal Sisma, if youre drafting green youre going to get plenty of use out of Ohran Frostfang
Ornithopter has been a fine part of artifact decks, but it probably doesnt belong in your limited deck