We'll be replacing them with mana sources that can better help with getting delirium faster
Specifically against Affinity, a deck which has recently been seeing more play and has even managed to top 8 the last Modern Challenge, destroying two artifacts very early can prevent them from even playing their Thought Monitor, Thoughtcast, Sojourners Companions and other cards since they will lack the necessary amount of Artifacts to enable Affinity
Whats even better is that Modern Horizon 2 s cards are great for both Modern and Commander
Blood Tokens are artifacts that for one-generic mana, can be tapped and sacrificed to discard a card and then draw one back giving a madness opportunity and extra card advantage for one mana
and allows you to play an instant or sorcery a second time
For example, [c]Kess, Dissident Mage[/c]s color identity is blue-black-red, because its mana cost consists of those three colors