Frisk

Whenever a creature dealt damage by Frisk dies
this turn, put a +1/+1 counter on Frisk.
{5}: Return each player's life and all cards to the
state and places they were at the beginning of the
turn. You may cast this ability without paying its
mana cost if Frisk would leave the battlefield.
{8}, {t}: Each player shuffles their hand,
graveyard, exile, and battlefield into their library,
then draws 7 cards. Players' life totals are now
equal to their starting life totals.