Meandering River

Creatures you control get +1/+1 until end of turn.

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Target player takes an extra turn after this one. Return up to one target nonland permanent to its owner's hand. Exile Karn's Temporal Sundering.

1G: Add one mana of any color.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.) Draw a card.

T, Sacrifice an artifact: This creature deals 2 damage to any target.

Pierce the Sky deals 7 damage to target creature with flying.

When this creature enters, target player mills four cards.

Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard. Dark Bargain deals 2 damage to you.