Morgana, Ahri, Swain, and Vlad will offer some of the best sustain for mid lane, with Morgana and Ahri being the burstier of the group.
Garen is another thought for top lane, and although not bursty, he's got one of the best finishers in the game, Aside from Mordekaiser and a couple of others with targetted finishers.
Bottomline is play free week champs and pick up the ones you like.
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