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Research
mtgCard

Card Name

Research // Development

Mana Cost

Type

Instant

Rarity

Rare

rules Text

Choose up to four cards you own from outside the game and shuffle them into your library.//Development
3
InstantPut a 3/1 red Elemental creature token into play unless an opponent lets you draw a card. Repeat this process two more times.

Legal Formats

Commander, Legacy, Modern, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Pioneer, Standard

Rulings

(10/1/2009)
A card "from outside the game" may be a card from your collection or a card from your sideboard. In tournament play, you can't choose a card from your collection. The cards you choose don't all have to come from the same place.
(10/1/2009)
The exile zone is a part of the game, so you can't get exiled cards.
(12/8/2022)
To cast a split card, choose one of its halves to cast. There's no way to cast both halves of this split card.
(12/8/2022)
Split cards have two card faces on a single card. The characteristics of the half you didn't cast are ignored while the spell is on the stack.
(12/8/2022)
Each split card is a single card. For example, if you discard a split card, you've discarded one card, not two. If an effect counts the number of sorcery cards in your graveyard, Assault // Battery counts once, not twice.
(12/8/2022)
Each split card has two names. If an effect instructs you to choose a card name, you may choose one of those names, but not both.
(12/8/2022)
A split card's characteristics are a combination of its two halves while it is not on the stack. For example, Assault // Battery has a mana value of 5 while it is in your library. If an effect allows you to search your library for a card with mana value 4 or less, you can't find Assault // Battery.
(12/8/2022)
If an effect allows you to cast a spell with certain characteristics, consider only the characteristics of the half you're casting. For example, if an effect allows you to cast a sorcery spell with mana value 2 or less from among cards in your graveyard, you could cast Assault this way, but not Battery.
(12/8/2022)
If you copy a spell that's half of a split card, the copy copies that same half. For example, if you copy Assault, the copy is also Assault, not Battery.