Other noncreature artifacts are mono and continuous. (Each activated ability of mono artifacts costs an additional T to activate if its cost doesn't already include T. As long as a continuous artifact is tapped, it loses all abilities.)
While Orb of Origin is on the battlefield, activating abilities of other artifacts may cause them to lose other relevant abilities when they become tapped. For example, if you activate Thought Vessel’s “{T}: Add {C}” ability, it’ll lose its “You have no maximum hand size” ability as long as it remains tapped. Similarly, activating Sword of the Meek’s equip ability (which costs an additional {T} while Orb of Origin is on the battlefield) will cause it to lose “Equipped creature gets +1/+2” as long as it remains tapped.
2024-11-08
wotc
To activate an ability of a permanent with the mono supertype, if that ability’s activation cost doesn’t already include {T}, activating that ability costs an additional {T} to activate.
2024-11-08
wotc
The poly supertype means Orb of Origin’s first ability doesn’t cost {T} to activate (unless another Orb of Origin is also on the battlefield).
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
Orb of Origin’s last ability applies only while it’s on the battlefield. It grants the mono and continuous supertypes to other noncreature artifacts on the battlefield.
2024-11-08
wotc
Having multiple Orb of Origins on the battlefield will have no additional effect on artifacts on the battlefield except that the Orb of Origins will also make each other mono and continuous.
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.
2024-11-08
wotc
A permanent with the continuous supertype has no abilities as long as it’s tapped.
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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Mystery Booster 2