The ONE Three-Drop (and Alternatives) The three-drop slot is definitely where the choice most depends on what version of the deck you are playing, with the most aggressive versions even eschewing them completely
A gem from the Tamamushi University competition, this card elevates the humble Magikarp to legendary status
The rest of the deck is almost entirely Human-based, with synergistic reprints in Zealous Conscripts, Combat Celebrant, and Door of Destinies to power up your Humans to inconceivable power
Between those, Auras are the superior option because they are cheaper than Equipment both in terms of mana and monetarily (have you seen how much Sword of Fire and Ice is lately?)
A well timed "Mystical Space Typhoon" against a "Bad Reaction to Simochi" can cause your opponent to gain the life you were trying to burn them for, as well as a well timed "Forbidden Chalice" or "Breakthrough Skill" against "Darklord Nurse Reficule" can also cause this to happen