Another card that might deal massive damage (and perhaps an OTK) is "Vision HERO Trinity". Summon "Elemental HERO Great Tornado" while your opponent has 3 monsters in attack position on the field, then Fusion Summon "Vision HERO Trinity" and attack them all.
Summon "Reborn Tengu" and use "Polymerization" to fuse with "Elemental HERO Shadow Mist" in your hand to add an "Elemental HERO" monster to your hand. Summon another "Reborn Tengu" to the field, and use this card's effects to halve their monsters while maximizing card advantage and consistency as all cards in this combo are searchable.
Use "Super Polymerization" to fuse an "Elemental HERO" monster on your field with a WIND monster your opponent controls (optionally by using "DNA Transplant" or "Scroll of Bewitchment"). This could sometimes leave your opponent open for a direct attack with "Great Tornado". This can be used to easily get rid of an opponent's "Stardust Dragon" as "Super Polymerization" does not destroy, rather, it sends cards to the Graveyard.
This card is great to use if there is already a weaker "HERO" monsters on the field or during the opponent's Battle Phase with "Super Polymerization". They will most likely have to resort to other methods of killing your monsters by battle and will be forced into ending the Battle Phase and most likely putting their monsters in defense mode.