In a "Geargia" Deck, this card can be used to revive "Gear Gigant X" and "Geargiaccelerator", both of which have effects that trigger when they're destroyed.
If the second effect of "Gear Gigant X" was used beforehand to revive "Geargiano", that monster's effect can be activated, and before the effect of "Geargiano" resolves, this card can be Chained if you control no other monsters.
In a "Gadget" Deck, this card can be used to revive a Level 4 "Gadget" monster, whose effect can be used when Special Summoned.
If "Gold Gadget" or "Silver Gadget" is Summoned, one can wait until the End Phase so that its second effect is triggered instead when destroyed.
In a "Machina" Deck, "Machina Gearframe" or "Machina Peacekeeper" can be Special Summoned and subsequently equip itself to the Xyz Monster or another Machine-Type monster, the former conveniently protecting the Xyz Monster during the End Phase.
"Machina Peacekeeper" is better, since its effect can be triggered when it's destroyed.
If "Number 53: Heart-eartH" is destroyed in a manner that doesn't trigger its last effect, this card can be used to revive it (and another monster with 100 or less ATK), so that its last effect can be triggered during the End Phase.