Similar to the original Manifest mechanic, this version gives you the choice of one of the top two cards of your deck, meaning you can easily dump a card type that's usually hard to get into your graveyard to begin with, like land or artifact
The full art version of 11/106 features an usually docile looking Charizard, which is a nice change from the fire breathing action shots used on many cards
The heroic ability that grants all your creatures +1/+0 until end of turn is good, as is creating a token when it enters the battlefield
Based on context, there's a chance the term "challenge" is a less confrontational version of battling or attacking an enemy card
The power here lies in the flexibility: This can be used as a surgical removal tool against key creatures in play, a sacrifice outlet for creatures with powerful die triggers, or a means of finishing off opponents by cashing in expensive cards
Privately produced card 2000-