Ambre can give you a 3 power difference unlike Eyrik's 1 power difference. But if you don't like it only happaning twice every match and you want higher power on the Leader i would use Morphun, because even though its not power manipulation +1 pillz per round is helpfull too.
Greem can work well in T1 when its harder to ko but in T2 posion dosn't really work because its very easy to KO befor its had any effect. Caelus Cr is easyer to win with and his 8 damage can help a lot.
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