These events are typically Sealed events, where players are given six booster packs of the new set and build a deck out of them to compete with
For just one mana you permanently exile any creature from the game, putting to rest any plans your opponent might be brewing for it
Ive already mentioned Sun Titan, but I also love its little sibling Guardian Scalelord, since its backup ability can let you bring back a nonland permanent from the graveyard right away, just like Sun Titan

Accursed Horde Adanto Vanguard Ademi of the Silkchutes Adept Watershaper Aegis Angel Aethershield Artificer Agent Frank Horrigan Agonasaur Rex Ainok Strike Leader Akiri, Fearless Voyager Akroma, Vision of Ixidor Amaranthine Wall Anara, Wolvid Familiar Angelheart Protector Angelic Guardian Angelic Overseer Animus of Predation Anya, Merciless Angel Archangel Avacyn Arco-Flagellant Arwen, Mortal Queen Athreos, God of Passage Athreos, Shroud-Veiled Avacyn, Angel of Hope Azlask, the Swelling Scourge Azra Smokeshaper Bane, Lord of Darkness Banquet Guests Barbed Servitor Bark-Knuckle Boxer Basri, Tomorrow's Champion Bast, Panther Goddess Bastion Protector Belligerent Regisaur Bello, Bard of the Brambles Bellowing Elk Bhaal, Lord of Murder Bladed Ambassador Blessed Hippogriff Blightsteel Colossus Bloodsworn Knight Bloodsworn Squire Bontu the Glorified Boromir, Warden of the Tower Brash Taunter Bronzehide Lion Bulwark Ox Burdened Stoneback Cait, Cage Brawler Captain America, Skybound Captain America, Steve Rogers Captain America, Unbowed Captain Marvel, Apex Avenger Captain Marvel, Earth's Protector Cathar's Companion Cecil, Redeemed Paladin Celebr-8000 Cloud, Planet's Champion Colossus of Akros Colossus, Steel Stalwart Consul's Shieldguard Creepy Doll Crested Sunmare Crew Captain Daring Fiendbonder Darksteel Colossus Darksteel Gargoyle Darksteel Juggernaut Darksteel Myr Darksteel Sentinel Darksteel Splicer Darwin, Adaptive Mutant

Though it also counts as board wipe protection, phasing like on Clever Concealment retains the counters and attachments on your permanents