If the creature has deathtouch or lifelink, both will apply to the damage it deals to itself
Moreover, these arent the first digital Magic cards unavailable in paperthere seem to be scant demand for Aswan Jaguar or Faerie Dragon
Emblems cant be removed by normal means, so even if Sephiroth is defeated, the emblem sticks around, pinging your opponents for the rest of the game

Alpine Grizzly Ashcoat Bear Ayula, Queen Among Bears Balduvian Bears Bear Cub Bosco, Just a Bear Copper Host Crusher Diregraf Scavenger Doc Aurlock, Grizzled Genius Dragon-Scarred Bear Drover Grizzly Druid's Familiar Duskana, the Rage Mother Evercoat Ursine Exuberant Wolfbear Fiendish Panda Forest Bear Friendly Teddy Golden Bear Goreclaw, Terror of Qal Sisma Grizzly Bears Grizzly Ghoul Hei Bai, Forest Guardian Hei Bai, Spirit of Balance Hurska Sweet-Tooth Koala-Sheep Kudo, King Among Bears Lumra, Bellow of the Woods Mother Bear Owlbear Owlbear Cub Pale Bears Phantasmal Bear Platypus-Bear Professor of Zoomancy Rampaging Yao Guai Razorclaw Bear River Bear Runeclaw Bear Ruxa, Patient Professor Spectral Bears Spirit of the Aldergard Striped Bears Studious First-Year Surrak and Goreclaw Ulvenwald Bear Ursine Fylgja Ursine Monstrosity Vastlands Scavenger Vivien's Grizzly Werebear Wilson, Refined Grizzly
4/64 Jolteon(Holo)
If Sorcerous Squall is your first spell in the turn, then the stolen spell will be copied, potentially giving you a huge advantage over the battlefield