The fact that Conqueror can also swing for five in the air makes it much more competitive in current Magic, too, even if it is more vulnerable to removal
Despite being reprinted in nearly every preconstructed Commander deck, Thran Dynamo's popularity has meant that it remains worthy of a few dollars despite being a merely uncommon card
By contrast, thicker and higher GSM card stock makes your deck more resistant to wear and tear , ensuring it lasts through repeated use
The life loss of Necro is the main problem with the card once you have managed to include it in your deck but it is not the only one
However, this has never panned out, just as stepping into a competitive format with a bad deck and no experience is unlikely to lead to success
Im sure you can find plenty of great mass removal cards, but let me suggest Supreme Verdict, Farewell, or Hour of Reckoning