Since this card is a Level 5 monster, Special Summon it during your opponent's turn via a "Kozmo" monster effect and use its first effect to destroy a Set "Artifact" monster in your Spell & Trap Zone. This will allow for a Rank 5 Xyz Summon to be set up during your next turn.
If "D.D.R. - Different Dimension Reincarnation", "Call of the Haunted", etc. is used to Special Summon a Machine-Type "Kozmo" monster, attack with that monster first before using a "Kozmo" monster effect to Special Summon this card. Then, use this card's first effect to destroy the Equip Card and thus trigger the destroyed monster's effect. This can help facilitate OTKs.
Alternatively, this card's first effect can be used to destroy 1 of those aforementioned Spell/Trap Cards, which will destroy this card and trigger its other effect.
If necessary, this card's first effect can be used to destroy a "Kozmotown" on your field and use that card's last effect to help facilitate OTKs.
If your opponent Sets a Spell/Trap Card, use a Psychic-Type "Kozmo" monster effect to Special Summon this card during the End Phase of that turn, and use this card's first effect to destroy that card so your opponent will be unable to activate it in response.
During your Battle Phase, while this card is on your field (assuming it has attacked already), Special Summon "Kozmo Dark Destroyer" via a "Kozmo" monster effect and use its effect to destroy this card. Then, activate the effect of this destroyed card to bring out another "Kozmo" monster, which can help facilitate OTKs.