You’ll still pay all costs for a spell you cast from your library, including additional costs. You may also pay alternative costs.
2018-10-05
wotc
You must follow the normal timing permissions and restrictions of the cards you play from your library.
2018-10-05
wotc
You can’t cast spells or play lands from your hand, but you may take other actions with those cards (such as discarding them to activate their cycling or bloodrush abilities).
2018-10-05
wotc
You can play a land card on top of your library only if you have available land plays remaining.
2018-10-05
wotc
If the top card of your library changes while you’re casting a spell, playing a land, or activating an ability, you can’t look at the new top card until you finish doing so. This means that if you cast the top card of your library, you can’t look at the next one until you’re done paying for that spell.
2018-10-05
wotc
Experimental Frenzy lets you look at the top card of your library whenever you want (with one restriction—see below), even if you don’t have priority. This action doesn’t use the stack. Knowing what that card is becomes part of the information you have access to, just like you can look at the cards in your hand.
Format Legality
Standard
Not Legal
Future
Not Legal
Historic
Legal
Timeless
Legal
Gladiator
Legal
Pioneer
Legal
Modern
Legal
Legacy
Legal
Pauper
Not Legal
Vintage
Legal
Penny
Legal
Commander
Legal
Oathbreaker
Legal
Standardbrawl
Not Legal
Brawl
Legal
Alchemy
Not Legal
Paupercommander
Not Legal
Duel
Legal
Oldschool
Not Legal
Premodern
Not Legal
Predh
Not Legal
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