River's Confluence

Choose three. You may choose the same mode more than once:
• Target player sacrifices a creature.
• Target player discards a card.
• River's Confluence deals 2 damage to each creature.
{bull} Exile all cards from target player’s graveyard.
{bull} You gain protection from a color of your choice until your next turn.

Where the five rivers of despair, memory, fire, hate, and forgetfulness meet, souls are unmade and woven anew, each stream claiming its due.