Using the Tenth Doctor card showing David Tennant in the role gives players access to the Allons-y! ability, that allows players to exile nonland cards from their deck and place time counters on them, and the Timey-Wimey ability, enabling players to time travel at the cost of removing time counters from their cards
If you are concerned how your kids will interact with other players when you are not around, Pokmon includes numerous parental controls, most notably when it comes to the ability to chat
The only card I really want to cut from this list is Bounty Hunter simply because it is quite a bad card it turns out
The same is true if the exiled card is colorless
Seems like a lot of hoops to jump through for a mediocre payoff
It also opens the door to the likes of Farseek, Sylvan Scrying, and Kodama's Reach