Strong, the Brutish Thespian, can even add life from radiation, making a great mechanic (at least for you), even more useful
Now your game state has calcified around this one card, with no real actions or decisions available other than briefly checking if each draw step provides an answer to the lock
For something as simple as a card to do this, is true magic
A lot of the cards are unassuming when they only have 1-3 charge counters but get real menacing once they get 5+ counters on them and the struggle has always been how to get more counters on them at a faster rate than just one a turn
Sometimes they are spectacular creatures or planeswalkers , and sometimes a simple common that does something small but, slotted into the right deck, proves lethal
Drawing cards with Champion of Dusk and making more 1/1s with Mavren Fein, Dusk Apostle is nothing to ignore