Naya, Prophetess

Hexproof, Costly 1 (at the beginning of each player's upkeep that player pays {1} or loses 1 life)
{t}: Deal 2 damage to target creature, if it dies its
owner discards a card.
At end of turn if Naya dealt damage this turn and
one or more of your creatures died during your previous turn, search your library for a creature,
a sorcery and a land and put all three
into your hand.