What magic the gathering cards have interrupt?
Interrupt is an obsolete game term, and any card that had it, is
now an Instant, or an ability that can be played at instant
speed.
Counterspell was originally an Interrupt, as were many other
counter cards. Any of them, that have been reprinted, will now show
as an Instant and even if a card has not been reprinted, its Oracle
wording will now show it as an Instant.