Ueki no Housoku, MÄR Recommendations
Both of them have special weapons/ability and both of them are participating on a tournament... If you like MAR, you like Ueki as well...
Almost identical formula for both series:
weak shounen trains and becomes more powerful as he faces various challenges.
both EXTREMELY good and EXTREMELY underrated anime. this 2 shows are definitely compatible. both have the same kind of pure action your looking for.
everyone in both anime's all have different powers.
both main's dad "left" them
both have a close girl friend that gets pulled into the situation.
both have a "coward, useless" friend that eventually becomes useful.
seriously if you see one you will like the other.
Personally i will definitely say that these shows are alike, they have the same feel and atmosphere. They action in both shows are great and the comedy is very similar to. Both of them have special weapons/ability and both of them are participating in a tournament... If you like MAR, you will like definitely like law of Ueki as well.