The list is probably going to be long
Like everything in Magic, the best you can do is stay calm and approach your mulligan decisions with a level head
Aatchik, Emerald Radian Akawalli, the Seething Tower Assassin's Trophy Badlands Revival Bebop & Rocksteady Beifong's Bounty Hunters Blech, Loafing Pest Bogwater Lumaret Brako, Heartless Hunter Broodheart Engine Broodspinner Camellia, the Seedmiser Cauldron of Essence Cease // Desist Cloud of Darkness Corpseberry Cultivator Cosmogoyf Dai Li Agents Deadly Brew Debris Beetle Dina's Guidance Drag to the Roots Earth Village Ruffians Eclipsed Elf Essenceknit Scholar Exdeath, Void Warlock Faunsbane Troll Grapple with Death Greta, Sweettooth Scourge High Perfect Morcant Hollowmurk Siege Honest Rutstein Host of the Hereafter Ice Cream Kitty Insidious Roots Izoni, Center of the Web Jenova, Ancient Calamity Killmonger, Scourge of Wakanda Kraul Whipcracker Kraven the Hunter Lathril, Blade of the Elves Lluwen, Exchange Student Lluwen, Imperfect Naturalist Long Feng, Grand Secretariat Maelstrom Pulse Mind Roots Morcant's Loyalist Neo Exdeath, Dimension's End Old-Growth Educator Pest Mascot Pillage the Bog Pizza Face, Gastromancer Professor Dellian Fel Putrid Pals Ragnarok, Divine Deliverance Rakish Scoundrel Root Manipulation Seedship Broodtender Squirming Emergence Stalwart Successor Stoic Grove-Guide Tainted Treats Teacher's Pest The Coming of Galactus The Gitrog, Ravenous Ride The Last Ronin The Mycotyrant The Serpent Society The Swarmweaver Thundering Broodwagon Titania, Rugged Rumbler Trystan's Command
Tempered Steel gives a +2/+2 bonus to artifact creatures
Regeneration isnt something that comes up much in modern MTG , but its still nice to have that bit of text just in case
That's the mana cost it takes in order to activate this ability
