OK, this might be a stupid question/suggestion, why not a set of bombs!? 8 bombs = 4 turns, pretty good idea eh? (just abuse me and tell me why i'm so dumb lol :>)
And unfortunately, all three of those are "Limit One"

Oh, I know! WATER MUFFIN!
Against a battler with
Faerie Tabard AND
Ghostkershield, together with Sink and Burrow, you're at their mercy.
In 1-player, though, it depends on who you are facing. Anyone who is equipped with a
Prismatic Mirror would be so delighted to fight against you...

In 1-player, though, it depends on who you are facing. Anyone who is equipped with a
Prismatic Mirror would be so delighted to fight against you...

Although that's only 1-player opponents, who are stupid and have no feelings... 
Ok I thought limit one meant of that weapon, not all bombs, sorry, still I wouldn't mind having a set with a healer, downsize, two multi use, 3 bombs and a freezer lol