They usually have about six threats and I have about twenty answers
Master of Cruelties Weighing in at five mana (one red, one black) Master of Cruelties is a creature card that can help you pull back from even the most desperate situations

Acererak the Archlich Aphemia, the Cacophony Archdemon of Unx Assemble the Rank and Vile Bone Miser Boneclad Necromancer Bridge from Below Cellar Door Cemetery Reaper Corpse Cobble Cradle of the Accursed Crowded Crypt Cryptbreaker Curse of Disturbance Curse of Shallow Graves Curse of the Restless Dead Death Tyrant Deluge of the Dead Diregraf Colossus Doomed Dissenter Drana's Chosen Dread Summons Drunau Corpse Trawler Dunes of the Dead Dying to Serve Embalmed Ascendant Falcon Abomination Feast or Famine Field of the Dead Flip the Switch Ghoulcaller's Accomplice Ghoulish Procession Graf Harvest Gravedig Graveyard Marshal Grim Reaper's Scythe Grixis Slavedriver Havengul Runebinder Headless Rider Hildibrand Manderville Hildibrand Manderville Hobbling Zombie Hour of Victory Jadar, Ghoulcaller of Nephalia Kalitas, Traitor of Ghet Lair of the Ashen Idol Liliana's Devotee Liliana's Reaver Liliana, Death's Majesty Liliana, Dreadhorde General Liliana, Heretical Healer Magus of the Bridge Midnight Ritual Necromancer's Covenant Necromancer's Stockpile Necromaster Dragon Necromentia Nested Ghoul Never // Return Never // Return Nevinyrral, Urborg Tyrant No Way Out Noosegraf Mob Null Caller Oath of Liliana Oglor, Devoted Assistant Open the Graves Overseer of the Damned Poppet Stitcher Rank Officer Reap the Seagraf Revenge of the Drowned

Put a flying counter, a first strike counter, and a lifelink counter on that creature
This means that if you cast a spell with demonstrate and both you and an opponent copy it, the opponent's copy will resolve first, then your copy will resolve, and finally the original spell will resolve