TARDIS
Artifact — Vehicle
Whenever this Vehicle attacks, if you control a Time Lord, the next spell you cast this turn has cascade and you may planeswalk.
Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)
Legal in
Legacy, Vintage, Commander
Rulings (11)
You may planeswalk only in games using the Planechase variant. If you are instructed to planeswalk in any other game, nothing happens.
2023-10-13
Due to a 2021 rules change to cascade, not only do you stop exiling cards if you exile a nonland card with lesser mana value than the spell with cascade, but the resulting spell you cast must also have lesser mana value. Previously, in cases where a card's mana value differed from the resulting spell, such as with some modal double-faced cards or cards with an Adventure, you could cast a spell with a higher mana value than the exiled card.
2023-10-13
If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, you must pay those to cast the card.
2023-10-13
You may planeswalk at the time TARDIS's triggered ability resolves, not at the time you cast the next spell.
2023-10-13