mtg gandalf cards the Grey - Single Card if you chose a creature other than Gandalf LotR: Tales of Middle-earth -

It'll cost you two life, of course, but that's a small price to pay for removing the best attacker on the board

However, this is a card that is often worth stretching for

Whats more is that Perdita, Devoted Mother almost negates the effect of cards like the dreaded Be Prepared and Grab Your Swords - once the bane of any amber players life, now just another way of getting yet more cheap cards into their discard, ready for Perdita, Devoted Mother to resurrect

Most cost reducers affect a subgroup of cards rather than every card type

We have cards that put counters on other permanents, permanents that add counters to themselves, and some mix therein