When A Girl and Her Dogs enters the battlefield and at the beginning of your upkeep, create a 1/1 white legendary Dog creature token and name it.
Whenever A Girl and Her Dogs attacks, it gets +1/+1 until end of turn for each legendary creature you control.
For many playtest cards, you’ll need to make a generous assumption that basic game rules would be updated to allow them to work. The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure.
08-11-2024
wotc
Tokens created with A Girl and Her Dogs’s first ability are still subject to the “legend rule”, so be wary of giving two Dogs the same name or naming a Dog after an existing legendary Magic card.
08-11-2024
wotc
Playtest cards aren’t legal for play in any tournament format other than Mystery Booster Limited formats. On the other hand, we expect they will spice up a wide variety of non-tournament games (as long as everyone’s on the same page about using them!).
08-11-2024
wotc
Playtest cards use a modified version of game symbols, such as {T} and {W}. These modified symbols should be treated as the standard symbols during play.
08-11-2024
wotc
You may give the Dog any name, including the name of an existing Magic card. Good names for Dogs include, but are not limited to: Booster, Bryn, Comet, Jasper, Killer, Pax, Pi, Ranger, Rocket, Sgt. Pepper, and Isamaru, Hound of Konda. (We thought you might need some suggestions to get you started.)
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.