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This card can discard itself to send a Cyber Dragon from the deck to the graveyard to Special Summon itself and get you a Spell or Trap search

Yes, on top of being reasonable extenders, these monsters each also boast an interactive effect, kind of like Therion (Coincidentally, another engine that might fit here)

Maybe from dirt or smudges while transferring it from your bag to the receiver

Eternal Sunshine X TRAP Continuous Monsters you control gain 500 DEF for each "Ancient Fairy Dragon", and monsters that mention it, that you control

If this card is activated, you can Special Summon 1 "Helios - The Primordial Sun" from your hand or deck

Exodia, for those unfamiliar, lets you win the game when you have all 5 pieces of it in your hand