Thing is, you cannot tribute to the doom in opponent's turn. This card can deal with masked hero and cyber stein decks. Although a trunade can prevent this though. Its not a must card, but not trash either.
Masked HEROes will still probably be relevant. This card's already pretty much completely outclassed by De-Fusion anyway, though. (Barring against people that only own 1 Anki or a select few decks like Gem-Knights with a lot of one-ofs. But the fact De-Fusion's Quick-Play makes up for that.)