
At the beginning of combat on your turn, choose target nonland permanent you control. Until end of turn, it becomes a Vehicle artifact with base power and toughness each equal to its mana valuemana valueThe total amount of mana in a card's cost, ignoring colour. A card costing has mana value 4. X counts as 0 except on the stack., and it gains crew 2 and "Crash Land — Whenever this Vehicle deals damage, roll a six-sided diedieA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying.. If the result is equal to this Vehicle's mana valuemana valueThe total amount of mana in a card's cost, ignoring colour. A card costing
has mana value 4. X counts as 0 except on the stack., sacrifice this Vehicle, then it deals that much damage to any target."
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.