Widogast's Tower

Home Away From Home — If a legendary creature you control would die, you may put it into exile instead of the graveyard. If you do, return it to the battlefield under your control at the beginning of your next upkeep.

Personal Attendants — At the beginning of your
end step, if one or more legendary creatures entered the battlefield under your control, create twice that many 1/1 blue Fairy Cat creature tokens.