When El Shaddoll Construct is successfully summoned, its effect can be activated to send 1 Shaddoll card to the graveyard
For the former, you can use Coastal Piracy to have tokens available for defence after each unblocked attack, any card drawn can be combined with Mystic Redaction, Sphinxs Tutelage or Psychic Corrosion, the Mystical Tutor and Solve the Equation help us find the right cards for any strategy, for example Time Warp, Pyromancers Goggles or Swarm Intelligence (matching the Commander)
Back to Nature Blastfire Bolt Cancel Chord of Calling Chronostutter Congregate Crowd's Favor Devouring Light Dissipate Divine Verdict Ephemeral Shields Flesh to Dust Gather Courage Heat Ray Hunter's Ambush Hydrosurge Inspired Charge Jace's Ingenuity Lightning Strike Meditation Puzzle Naturalize Necrobite Negate Peel from Reality Pillar of Light Plummet Polymorphist's Jest Raise the Alarm Ranger's Guile Sanctified Charge Seismic Strike Shrapnel Blast Statute of Denial Stoke the Flames Titanic Growth Turn to Frog Ulcerate Unmake the Graves therspouts
Attackers that have leftover damage once they have defeated any blockers usually cannot assign that remaining damage to another target
Make sure youve got a friend to watch your back out there
Just communicating the basic rules and turn structure of Magic is already an intense crash-course for most people