mtg cards with first strike and deathtouch Glissa, the Traitor mtg cards with first strike

WotC realized since the beginning of the game that this was a very powerful effect to print, and because of that great tutors are somewhat scarce

Because it has persist, it comes back to the battlefield with a -1/-1 counter

Cogmentor Contraption Cannon Curious Killbot Entirely Normal Armchair Everythingamajig Gnome-Made|Engine Handy Dandy Clone Machine Kindslaver Krarks Other Thumb Labro|Bot Lobe Lobber Mad Science Fair Project Modular Monstrosity Proper Laboratory Attire Robo- Split Screen Staff of the Letter Magus Stamp of Approval Steam-Powered Steel Squirrel Sword of Dungeons & Dragons Voracious|Vacuum Accessories to Murder Applied Aeronautics Arms Depot Auto-Key Bee-Bee Gun Boomflinger Buzz Buggy Deadly Poison Sampler Dictation Quillograph Dispatch Dispensary Division Table Dogsnail Engine Dual Doomsuits Duplication Device Faerie Aerie Genetic Recombinator Gift Horse Gnomeball Machine Goblin Slingshot Guest List Hard Hat Area Head Banger Hypnotic Swirly Disc Inflation Station Insufferable Syphon Jamming Device Lackey Recycler Mandatory Friendship Shackles Neural Network Oaken Power Suit Optical Optimizer Pet Project Quick-Stick Lick Trick Rapid Prototyper Record Store Refibrillator Sap Sucker Sundering Fork Targeting Rocket Thud-for-Duds Top-Secret Tunnel Tread Mill Turbo-Thwacking Auto-Hammer Twiddlestick Charger Widget Contraption LAND Secret Base Watermarket Plains Island Swamp Mountain Forest WHITE | BLUE | BLACK | RED | GREEN MULTICOLORED | ARTIFACT | LAND | ALL CARDS

You can call it canon at any time because thats what the multiverse implies, but at the same time those promotional cards were just card styles and not actual standalone cards like the Street Fighter or Walking Dead Secret Lairs

Even worse than Time Spiral, the Jar required no activation cost once it was on the table