When Veil of Summer was first printed, it had a big impact on the format, with people even calling for it to be banned
Hes also got an interesting ability that could be interesting to explore while not necessarily competitively viable
Tavern Scoundrel can turn your coin flips into Treasures, giving you the extra mana you need to cast your big threats
However, depending on your deck's goal and type, the curve of your spells might differ from that of your creatures
While it has some powerful stand-outs such as Balance, Armageddon, and Moat, its very shallow
The planeswalker half is in a poor position of having an extremely threatening ultimate, so players are incentivized to get rid of it, but having fairly weak alternate abilities outside the ultimate