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
Add the top 2 cards of your opponents deck to his or her Prize cards
With only three examples recorded at a CGC 9 grade and two graded higher, this card is an impossibly scarce relic for dedicated collectors
Territorial Kavu is probably better overall since it will also have five toughness (while Nishoba Brawler only has three, so it dies to Lightning Bolt), and its attack trigger is good for rummaging through our deck to find combo pieces, although the trample on Nishoba Brawler can be a nice upside
By my calculation, that's somewhere in Gen 2
Being a kid, I took their opinions as gospel