Mechtitan Core is a rare Artifact — Vehicle card from Kamigawa: Neon Dynasty (NEO), collector number 497. Current market price: $0.57 (foil $0.48), TCGplayer market prices via Scryfall.
{5}, Exile this Vehicle and four other artifact creatures and/or Vehicles you control: Create Mechtitan, a legendary 10/10 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors. When that token leaves the battlefield, return all cards exiled with this Vehicle except this card to the battlefield tapped under their owners' control. Crew 2