You'll still be subjected to a coin-flip on every Stitch you cast or copy, but you're bound to win a few flips if you just cast the card enough times
Not just that, but if the card is sent from the Field to the Graveyard while face-up, it can destroy any card on the Field without Targeting, which is one of the best forms of removal
Then we can have many more
Aurelia's Fury saw a tiny bit of play but was just too clunky to be useful in the way you want a spell like that to be
Speaking of which, Slifer should also have its own Continuous Spell that grants its controller an infinite hand size and forces them to draw each time a monster is Special Summoned from a Graveyard
Darkness and Metal types were added in the 2000 Neo Genesis set, with Dragon-type Pokmon introduced in 2012s Black & White - Dragons Exalted set and Fairy-type Pokmon and energy introduced in the XY series in 2013