Knowledge Exploitation [Morningtide]Set: Morningtide Type: Tribal Sorcery Rogue Rarity: Rare Cost: {5}{U}{U} Prowl {3}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Search target opponent's library for an instant or sorcery card. You may cast that card without paying its mana cost. Then that player shuffles.

Battleworn (If you defend with Refraction Bolters

Set: HeartGold & SoulSilver: Undaunted Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

while Armory Call can help find whatever Equip Spell your monster needs when it matters most

Set: Sword & Shield: Chilling Reign Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {2} {3}

You don't ask why a plague spreads or a field burns

Set: Sun & Moon: Cosmic Eclipse Type: Water Rarity: Secret Rare Retreat cost: 0

You may cast Brokkos

You gain life equal to the life lost this way

Set: Aquapolis Type: Stadium Rarity: Uncommon

Set: Black & White: Plasma Freeze Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

to whom can you pray