Alistar's Passive seems to have a bugged AP scaling, making him do massive damage on all spell casts.
If you look at the statistics from a game [(Here)](http://matchhistory.pbe.leagueoflegends.com/en/#match-details/PBE1/62388979/2200142489?tab=stats) you can see that the two Alistars have 200k+ and 400k+ Damage Dealt in a 20 min game.
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