MTGA doesnt have an option to trade with other players
When using AR Viewer, your Pokmon are fully animated and can be coaxed into performing special actions using Items some items receive different reactions from the Pokmon

Advanced Search Sets Random Syntax Aboroth Adaptive Snapjaw Aetherwind Basker Aggressive Mammoth Agonasaur Rex Alpha Tyrranax Altanak, the Thrice-Called Ambush Krotiq Ancient Adamantoise Ancient Brontodon Ancient Bronze Dragon Ancient Greenwarden Ancient Imperiosaur Ancient Silverback Annoyed Altisaur Ant Queen Apex Altisaur Apex Devastator Arachnus Spinner Arashi, the Sky Asunder Arashin War Beast Arbor Colossus Arborback Stomper Arboretum Elemental Archetype of Endurance Archweaver Arctic Nishoba Aurora Awakener Auspicious Starrix Autarch Mammoth Avatar Kyoshi, Earthbender Avatar of Might Avenger of Zendikar Avenging Hunter Axebane Stag Ayumi, the Last Visitor Balamb T-Rexaur Balustrade Wurm Barbtooth Wurm Bashful Beastie Battle Mammoth Beacon Behemoth Beanstalk Wurm Beast in Show Beorn the Fierce Beorn, Reluctant Host Birthing Hulk Body of Jukai Bookwurm Bramble Wurm Brambleweft Behemoth Briar Hydra Bribe Taker Bringer of the Green Dawn Brontotherium Broodcaller Scourge Burly Breaker Cactarantula Caller of the Pack Candlelit Cavalry Canopy Gargantuan Canopy Gorger Carnage Tyrant Carnage Wurm Carnassid Cavalier of Thorns Cavern Stomper Cavern Thoctar Challenger Troll Chancellor of the Tangle Changeling Titan Charging Binox

Before demand starts going up again, here are ten great cards you can find on TCGplayer right under or around $100, in no particular order
While using these cards to apply damage and poison to the opponent, focus on building up Arbok on the bench with Darkness Energy
Bodyguard means that, when it comes to challenging, an opponent has to go after the Bodyguard before they can challenge any of your other characters