101.3. Any part of an instruction that’s impossible to perform is ignored. (In many cases the card will
specify consequences for this; if it doesn’t, there’s no effect.)

114.6. Some effects allow a player to change the target(s) of a spell or ability, and other effects allow a
player to choose new targets for a spell or ability.
114.6a If an effect allows a player to “change the target(s)” of a spell or ability, each target can be
changed only to another legal target. If a target can’t be changed to another legal target, the
original target is unchanged, even if the original target is itself illegal by then. If all the targets
aren’t changed to other legal targets, none of them are changed.
114.6b If an effect allows a player to “change a target” of a spell or ability, the process described in
rule 114.6a is followed, except that only one of those targets may be changed (rather than all of
them or none of them).
114.6c If an effect allows a player to “change any targets” of a spell or ability, the process described
in rule 114.6a is followed, except that any number of those targets may be changed (rather than
all of them or none of them).
114.6d If an effect allows a player to “choose new targets” for a spell or ability, the player may
leave any number of the targets unchanged, even if those targets would be illegal. If the player
chooses to change some or all of the targets, the new targets must be legal and must not cause
any unchanged targets to become illegal.
114.6e When changing targets or choosing new targets for a spell or ability, only the final set of
targets is evaluated to determine whether the change is legal.
Example: Arc Trail is a sorcery that reads “Arc Trail deals 2 damage to target creature
or player and 1 damage to another target creature or player.” The current targets of
Arc Trail are Runeclaw Bear and Llanowar Elves, in that order. You cast Redirect, an
instant that reads “You may choose new targets for target spell,” targeting Arc Trail.
You can change the first target to Llanowar Elves and change the second target to
Runeclaw Bear.

702.6a Equip is an activated ability of Equipment cards. “Equip [cost]” means “[Cost]: Attach this
permanent to target creature you control. Activate this ability only any time you could cast a
sorcery.”