It shouldnt be too difficult to swing in with a Dinosaur and cast multiple of its friends in the same turn to pull way ahead
Grading has made it much easier to buy and sell cards
Lastly, I use Uber to go to my home airport at least once a month, and repeatedly, the flexibility of using the credit towards either a ride-sharing service or a meal delivery service gives an edge over the dining credit
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A well-built deck with a smooth mana curve and a good mix of creatures and spells will function just fine, even if it doesn't have much synergy
A good competitive player constantly assesses their opponents board, their own hand, and the potential cards remaining in their deck to plan several turns ahead, always working towards their win condition while disrupting the opponents