With just a turn or two after your commander hits the battlefield, youre able to string together four to five instants or sorceries with a few other wraiths to have the needed nine to get the big boost in power
Where I think this is very strong is with planeswalkers that target your leader, like Basri Ket's +1 to put a +1/+1 counter on it, now your team for two more mana
Bloomburrow (BLB) #287 Illustrated by Yeong-Hao Han Magic: The Gathering, MTG Company: Wizards of the Coast Series: Bloomburrow Brand: Magic The Gathering Item Type: Single Card Release Date: August 2, 2024 UPC: Stock #: 497975 Our Guarantees to You, Our Valued Customer
This is known as tapping the card
The creatures in the Challenger Deck are mostly on point, minus a couple of extra copies of Murderous Rider and Lovestruck Beast, while the main expense is improving the mana base with a playset of Overgrown Tomb (which thankfully is one of the cheaper shock lands, at only $46 for all four copies)
Still, that's a small gripe when this deck is as strong as it truly is