Not only is that okay, but that is recommended as having a card with multiple purposes ultimately gives you more flexibility to react to certain scenarios and bring synergy to your decks theme
Standard has been hostile to Creature decks that aren't incredibly fast aggro decks for a while now, and I don't think that's going to change with so many new sets entering Standard next year
Sami might secretly be the strongest commander in the set, though he comes with a hefty cost
Then you can overload it and have a Wrath of God
Though most lists of valuable cards are full of collectible art variants, meant for display or grading, whenever we see a bordered card, its a good bet that players are acquiring them for their decks too
You definitely get a lot of chaos with a cascade deck, but youre also building around a very powerful mechanic