you can use all spells, you can actually put other monsters besides water in your deck. you can only summon water type monsters tho. so its jus tbest to place a ton of water level monsters and go duel a lvl 10 LD.
hi mate, how did you manage to pass the stage 23 ? it says that i have to use level 2 or lower monster cards 3 time in one duel, i use actually for in one duel and it did not work. could you please help me ?