[1] You can spend money on the game if youd like, but if you keep playing for free you should be able to unlock enough cards to build a deck you like
Buy Information Draw a card
Second, Morlun will deal X damage to an opponent as it enters, and with lifelink baked in here, it means youll be gaining some life as part of the effect as well
I've heard they just cut open the card saver when processing so a pull tab doesn't really help much in that case

Abandon the Post Abandoned Sarcophagus Abhorrent Oculus Abstract Performance Acorn Harvest Advanced Reconstruction Aerial Extortionist Alaundo the Seer Alex Wilder, Runaway All-Fates Stalker Aloe Alchemist Alrund's Epiphany Altar of Bhaal Alter Reality Ambush Wolf Amethyst Dragon Aminatou's Augury Amped Raptor Analyze the Pollen Ancestral Tribute Ancestral Vision Ancient Grudge Angel of the Dire Hour Angelfire Ignition Angelic Favor Annie Flash, the Veteran Annoyed Altisaur Anticausal Vestige Antiquities on the Loose Apex Devastator Apex of Power Appa, Steadfast Guardian Appeal // Authority Aquatic Alchemist Arc Blade Arcane Bombardment Arcane Heist Arcane Infusion Arcane Proxy Arcane Savant Archaic's Agony Archfiend's Vessel Archmage's Newt Ardent Plea Ardenvale Tactician Army of the Damned Arrogant Wurm Artful Dodge Artful Maneuver Arvinox, the Mind Flail Ashiok, Nightmare Muse Assert Authority Atraxi Warden Augury Raven Auron's Inspiration Aurora Phoenix Auspicious Starrix Author of Shadows Avatar's Wrath Aven Interrupter Azula, Cunning Usurper Back from the Brink Baron Helmut Zemo Bash to Bits Basking Rootwalla Battle Mammoth Battle Screech

Heres the screenshot for the final Draft and deck