On the flip side, you just gave your opponent three extra lore
Abandon Hope Acceptable Losses Big Score Bitter Triumph Bone Shards Cathartic Reunion Channeled Force Demand Answers Devastating Dreams Dusk Mangler Electric Revelation Final Strike Firestorm Grab the Prize Honor the God-Pharaoh Insidious Dreams Kaervek's Spite Katara, Seeking Revenge Knife Trick Laughing Mad Lesser Masticore Lightning Axe Magmatic Insight Mardu Outrider Minion Missile Monastery Siege Nahiri's Wrath Natural Order Necrologia Nostalgic Dreams Pirate's Pillage Probe Pumpkin Bombardment Quarrel's End Restless Dreams Ruthless Disposal Sazacap's Brew Scorched Earth Seize the Spoils Sickening Dreams Sonic Burst Sonic Seizure Souls of the Lost Sparkhunter Masticore Surge of Strength Thrill of Possibility Thrill-Kill Disciple Timeline Inquiry Titania, Rugged Rumbler Tormenting Voice Turbulent Dreams Unexpected Windfall Vengeful Dreams Waste Away Wild Guess ther Tide

Creature Artifact - Golem Phyrexian Color tag templates(None) Emrakul, the Aeons Torn This spell can't be countered
And even when you get a character here, there are ways to play around that ability, like using small characters to finish off larger characters or just using straight-up removal
Katara, Waterbending Master rewards you like Sanctum of Calm Waters where the first counter gets you to a loot, but after that is pure card draw
I have ranked these quite a lot above what they should be relative to what the better green versions received and that is to do with black having way more need of these cards