mtg ikoria commander deck list Lair of Behemoths Champion of Freedom partnered with Silvar Marvel Super Heroes Commander Precons:

On the other hand, haste allows me to ignore summoning sickness, so I can attack with a creature or tap it the turn it enters the battlefield

The last item that should be covered is to not be afraid to take a break from the competitive scene to visit one of the most accessible formats that makes MTG so great in the first place: EDH or Commander

Not regularly checking and updating your listings

Blaster Hulk Any card offering this large a potential cost discount is going to be worth a look, and Blaster Hulk to me looks like its half a line of rules text away from breaking Legacy

Yes, Glimpse is 20% better but usually 2 cards isn't the difference