A simple and effective strategy is to give deathtouch to creatures with first strike, like Danitha Capashen, Paragon and Kellogg, Dangerous Mind, to make them ultra good in combat
Bant Midrange foundation 2 Deputy of Detention 4 Frilled Mystic 3 God-Eternal Oketra 4 Growth-Chamber Guardian 4 Hydroid Krasis 4 Incubation Druid 2 Knight of Autumn 4 Llanowar Elves 2 Shalai, Voice of Plenty 3 Teferi, Time Raveler 4 Vivien, Champion of the Wilds Esper Midrange Planeswalkers from War of the Spark have strengthened Esper Midrange, especially with the additions of Liliana, Dreadhorde General, Sorin, Vengeful Bloodlord, and Teferi, Time Raveler
instead Skip, to indicate an event, step, phase, or whole turn will be replaced with nothing , like how Necropotence skips your draw step, or Trouble in Pairs skips extra turns
This deck doesnt run any of that and you can be confident that you wont run into any rule-breaker cards playing this exact list
There are two main ways to metagame a Regional Championship
You want to make sure that your high-value, rare cards keep their value, whether you look to sell or trade your cards in the future or want them insured