Sharky, Bounding Energy

Soulbond
When Sharky, Bounding Energy enters the battlefield, draw a card. When a player enters their end step they draw a card, then they send that card to the graveyard, then all players may play that card for its converted colorless mana cost at the beginning of their Main Phase 1. If a card remains in a graveyard this way, Sharky, Bounding Energy gains +1/+1