Witch-Maw the Gathering (of Planeswalkers) (EDH / Commander)

Why I'm playing certain cards:
Altered Ego - Copy one of my best creatures, but better.
Ivorytusk Fortress - With Nissa, Voice of Zendikar, I can untap all of my creatures at all untap steps.
Felidar Sovereign - With a couple swings with Atraxa, I can win the game easily.
Sage of Hours - Kind of unfair, but if I'm at risk of dying I might need to remove any threats with a couple extra turns.
Tamiyo, Field Researcher - Tapping and free cards with her emblem.
Call the Gatewatch - Get one of my many planeswalkers.
Ugin's Insight - Large amounts of scrying and card draw.
Gleancrawler - Graveyard return.
Ob Nixilis Reignited - Card draw, destruction, and a punishing emblem.
Sorin, Solemn Visitor - Lifelink and crazy emblem.
Odric, Lunarch Marshal - With Atraxa out I can give all of my creatures Flying, Vigilance, Deathtouch, and Lifelink.
Ajani, Mentor of Heroes - Counters, drawing, and heavy lifegain.
Primordial Hydra - A massive creature after a while. Can easily one shot opponents.
Mind's Eye - (Masterpieces edition) Card draw. And its a masterpiece.
Infuse with the Elements - Up to 4 counters and trample at instant-speed. A great combat trick.
Ordeal of Erebos - Counters and discarding.
Ordeal of Thassa - Counters and drawing.
Deadbridge Goliath - My favorite card, and a possible counter giver.
Liliana Vess - Discard, tutors, and heavy graveyard return.
Jace, the Mind Sculptor - (EDH legal Amazon fake reprint version) Control and library exiling.
Garruk, Apex Predator - Lifegain and planeswalker destruction.
Primeval Bounty - Tokens, counters, and lifegain.
The Chain Veil - Activating my planeswalkers twice in one turn.
All Suns' Dawn - Graveyard return.
Ashiok, Nightmare Weaver - Exile stuff.
Nissa, Voice of Zendikar - Tokens, counters, lifegain.
Villanious Wealth - Enormous exile possession.
Sorin Markov - lifegain and drain, and player control.
Exert Influence - Creature control.
Bow of Nylea - Deathtouch, counters, lifegain, and flying destruction. Kind of.
Vraska the Unseen - Destruction and a game winning ultimate.
Loose Lips - Probably the most fun thing to play against in this deck.