Mental Magic: (many variations exist, but this is what we play with)
take a random stack of cards (leftover commons from a draft work very well) with no basic land. shuffle them. both players play from the same deck. Any card in your hand may be played either
a) face-down as a rainbow dual-land (counts as every basic land) or
b) as any OTHER card with the same casting cost.
Limitations: each time play a card or reveal it from your hand, etc (any time the identity of a card must be known), you name the card. Each card may be named only ONCE. Thus, the first person to play a card with casting cost 1U can name "time walk" but that is the ONLY time "time walk" can be played during that game. the next time a spell with casting cost 1U is played, it must be played as something else (impulse, mana leak, etc)
Lands can be played as any non-basic land. usually the first one to come out is Library of Alexandria, and the second is Wasteland.
Some rules ban flashback cards because it's difficult to keep track of the graveyard. some ban tutor cards because it's too easy to skim through for excellent casting costs. Kicker cards are really good; they're 2-for-1 effects.
we ban Sylvan Library and Mirri's Guile because with one deck it's too easy to stack it against your opponent, and we ban Fastbond and Horn of greed because it's too easy to win on turn 2.
take a random stack of cards (leftover commons from a draft work very well) with no basic land. shuffle them. both players play from the same deck. Any card in your hand may be played either
a) face-down as a rainbow dual-land (counts as every basic land) or
b) as any OTHER card with the same casting cost.
Limitations: each time play a card or reveal it from your hand, etc (any time the identity of a card must be known), you name the card. Each card may be named only ONCE. Thus, the first person to play a card with casting cost 1U can name "time walk" but that is the ONLY time "time walk" can be played during that game. the next time a spell with casting cost 1U is played, it must be played as something else (impulse, mana leak, etc)
Lands can be played as any non-basic land. usually the first one to come out is Library of Alexandria, and the second is Wasteland.
Some rules ban flashback cards because it's difficult to keep track of the graveyard. some ban tutor cards because it's too easy to skim through for excellent casting costs. Kicker cards are really good; they're 2-for-1 effects.
we ban Sylvan Library and Mirri's Guile because with one deck it's too easy to stack it against your opponent, and we ban Fastbond and Horn of greed because it's too easy to win on turn 2.