FirebendingFirebending is a triggered ability. “Firebending N” means “Whenever this creature attacks, add N . Until end of combat, you don’t lose this mana as steps and phases end.”
An ability that triggers whenever a player firebends triggers whenever a firebending ability they control resolves. (CR 702.189) 1 (Whenever this creature attacks, add
. This mana lasts until end of combat.)
When this Vehicle enters, target creature you control gains
indestructibleIndestructible is a static ability.
A permanent with indestructible can’t be destroyed. Such permanents aren’t destroyed by lethal damage, and they ignore the state-based action that checks for lethal damage (see rule 704.5g).
Multiple instances of indestructible on the same permanent are redundant. (CR 702.12) until end of turn.
CrewCrew is an activated ability of Vehicle cards. “Crew N” means “Tap any number of other untapped creatures you control with total power N or greater: This permanent becomes an artifact creature until end of turn.”
A creature “crews a Vehicle” when it’s tapped to pay the cost to activate a Vehicle’s crew ability.
A Vehicle is “crewed by” a creature if that creature was tapped to pay the cost to activate that Vehicle’s crew ability.
If an effect states that a creature “can’t crew Vehicles,” that creature can’t be tapped to pay the crew cost of a Vehicle.
Some Vehicles have abilities that trigger when they become crewed. “Whenever [this Vehicle] becomes crewed” means “Whenever a crew ability of [this Vehicle] resolves.” If that ability has an intervening “if” clause that refers to information about the creatures that crewed it, it means only creatures that were tapped to pay the cost of the crew ability that caused it to trigger. (CR 702.122) 1 (
TapTo tap a permanent, turn it sideways from an upright position. Only untapped permanents can be tapped. (CR 701.26) any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)