Most of the alternatives on this list offer better general or better specific card quality and so you really need to know what it is you are trying to do with this kind of spell so as to play the most effective in your deck
Some self-mill examples might be Sidisi, Brood Tyrant, Grisly Salvage, or Otherworldly Gaze
You can find art cards in Set boosters from sets starting with Zendikar Rising and Kaldheim until The Lost Caverns of Ixalan
But seriously, it turns out these game stores love newbies, so get down to one
Poison and Burn are the easiest to understand, as they do a flat amount of damage during each turn, while the other three status conditions are all important parts of control decks
I honestly cant imagine Tron without them these days