Water Analysis Water quality monitoring for hygiene and sanitation purposes, surface water, drinking water, sea water, wastewater and more
It also only costs two mana, so opponents might not be too suspicious if you're leaving mana open after a turn
Ive already sculpted out a few control shells with what remains, and Im generally optimistic, outside of a devastating Gruul planeswalker I saw, that our answers can defeat the threats

1 Exterminatus 1 Collective Effort 1 Deploy to the Front 1 Fell the Mighty 1 Hour of Reckoning 1 Launch the Fleet 1 Martial Coup Instant (6) 1 And They Shall Know No Fear 1 Deny the Witch 1 Entrapment Maneuver 1 Utter End 1 Swords to Plowshares 1 Mortify Artifact (14) 1 The Golden Throne 1 Inquisitorial Rosette 1 Knight Paladin 1 Reaver Titan 1 Thunderhawk Gunship 1 Everflowing Chalice 1 Mind Stone 1 Skullclamp 1 Sol Ring 1 Talisman of Dominance 1 Talisman of Hierarchy 1 Talisman of Progress 1 Arcane Signet 1 Commander's Sphere Enchantment (4) 1 Defenders of Humanity 1 Birth of the Imperium 1 The Flesh Is Weak 1 Reconnaissance Mission Land (37) 1 Choked Estuary 1 Darkwater Catacombs 1 Exotic Orchard 1 Port Town 1 Prairie Stream 1 Skycloud Expanse 1 Sunken Hollow 1 Arcane Sanctum 1 Ash Barrens 1 Memorial to Glory 1 Command Tower 1 Dismal Backwater 1 Evolving Wilds 1 Path of Ancestry 1 Scoured Barrens 1 Terramorphic Expanse 1 Tranquil Cove 5 Island 7 Swamp 8 Plains White (21) 1 Celestine, the Living Saint 1 Defenders of Humanity 1 For the Emperor

No damage will be dealt, and you won't discard and draw even if you cast Nibelheim Aflame from a graveyard
* When one of the Champions of Kamigawa flip creatures flips, it becomes legendary