Replacement effects that modify creatures of a certain type as they enter will apply after you apply Rin and Seri, Inseparabler’s first and second abilities, as appropriate. For example, if you control Rin and Seri, Inseparabler as well as a permanent with “Each Dog you control enters with an additional +1/+1 counter on it” and you create a 1/1 Cat token, that Cat token will be a Dog Cat token and will enter with a +1/+1 counter on it, a woof, and a purr.
2024-11-08
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.
2024-11-08
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!).
2024-11-08
wotc
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.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Not Legal
Timeless
Not Legal
Gladiator
Not Legal
Pioneer
Not Legal
Modern
Not Legal
Legacy
Not Legal
Pauper
Not Legal
Vintage
Not Legal
Penny
Not Legal
Commander
Not Legal
Oathbreaker
Not Legal
Standardbrawl
Not Legal
Brawl
Not Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Not Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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