Heed the Mists [Betrayers of Kamigawa] Elemental Warrior Shaman Set: Oath of the Gatewatch

Set: Oath of the Gatewatch Type: Creature — Human Shaman Ally Rarity: Common Cost: {3}{B} Cohort — {T}

Set: Prophecy Type: Instant Rarity: Common Cost: {2}{R} Rhystic Lightning deals 4 damage to any target unless that permanent's controller or that player pays {2}

that would be sufficient

When Wall of Omens enters the battlefield

You choose which creatures block this combat and how those creatures block

Heed the Mists [Betrayers of Kamigawa] Elemental Warrior Shaman Set: Oath of the GatewatchSet: Betrayers of Kamigawa Type: Sorcery Arcane Rarity: Uncommon Cost: {3}{U}{U} Mill a card, then draw cards equal to the milled card's mana value. "Once, I looked to the mists for wisdom. Now I wish only for understanding."