At the beginning of your upkeep, return a permanent you control to its owner's hand.

Draw three cards, then put two cards from your hand both on top of your library or both on the bottom of your library.

Explorer's Cache enters the battlefield with two +1/+1 counters on it.

Whenever a creature you control with a +1/+1 counter on it dies, put a +1/+1 counter on Explorer's Cache.

: Move a +1/+1 counter from Explorer's Cache onto target creature. Activate only as a sorcery.

You gain 2 life. Then if you have more life than an opponent, draw a card.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)