While not particularly powerful, Winnie the Pooh Hunny Wizard typically sells for around $200
You special summon Desperado Barrel Dragon from your hand, and then on your turn you activate its effect, flip 3 heads, and destroy 3 of your opponents monsters
Both cards can also affect your own monsters, but due to "Koa'ki Meiru" monster starting out with high ATK and gaining a sizeable boost via "Core Overclock", you can simply decide to go full caveman and simply attack with your beatsticks if necessary
Maybe also Gush and certainly Frantic Search
The downside to this is youll either need to draw or tutor the second half of the meld pair during the game
Elemental HERO decks have options for plenty of Fusion Monsters, as well as Link Monsters if you dip into the Xtra HERO lineup