Lifegain is a popular mechanic among Commander players (at least very much among the players that I know), and a simple 4-drop that not only shuts off all lifegain but reverses it into life loss seems like an extremely powerful effect to me
Thats unreasonable (though Im sure it will happen at some point)
Its power and toughness aren't that high, but the true value of Dockside Extortionist comes from its ability to produce treasures out of nowhere
Veterans usually take the common play-pattern of permanently dispatching stuff by removing their own Oblivion Ring in the window between the two abilities resolving
In a game full of very serious characters and weighty plotlines deciding the fate of Dominaria and the multiverse, it can sometimes be a breath of fresh air to play a deck thats populated by furry woodland creatures, birds, squirrels, cats or dogs
The advent of UB has undoubtedly changed Magic , but some cards have done so more than others