Ob Nixilis, the Fallen, is a five mana 3/3 Demon
Weve not been able to see how the deck plays, but we do know that your Commander of choice can be any of the Turtles, two of them partnered up with the Partner ability, or all five with the Heroes in a Half Shell card
Games have gotten faster these days, and so investing five whole mana to draw a singular card not even guaranteed is a big ask
If a triggered ability asks you to pay a cost, you pay that cost for the copy separately
Magic: the Gathering keeps the crossovers coming, and after bringing Deadpool, Sponge-Bob and Final Fantasy to SecretLair, theyve opened the lair once again for an upcoming MTG x Sonic the Hedgehog three-set SecretLair drop
Youll often get a few 1/1 soldiers and a couple lands as this white creature sits in play, which is perfectly reasonable for a 4-mana play