Users can also create completely original cards, like my Flamebreaker Mage card, with the website
Rona, Tolarian Obliterator is a great fallback if you run out of gas and cant loot your way through extra lands
For the low, low cost of one card, you get to attack again, draw a card, and use all of your mana a second time, plus get a crack at additional upkeep/end step triggered abilities and all that good stuff
Still, if your group is down to play with the flayer, supplement your gain control of spells with some reanimation spells that can target any graveyard
Across all three of these sample lists, it's immediately apparent that the vast majority of the deck's core remains perfectly intact, highlighting the optimized and consistent nature of the OP05-002-belo-betty archetype in competitive play