Entwine

Entwine is a keyword ability appearing on modal instants and sorceries; i.e., ones with the "Choose one —" clause.
==Description==
As you cast a spell with entwine, if you pay the additional entwine cost, instead of choosing only one of the modes of the spell, you choose all of them. In all cases but one, this is two options, and hence the reminder uses "both". 
Spells with entwine were featured in the Mirrodin block.
===History===
Entwine was also used in Modern Horizons, Commander 2019, and Modern Horizons 2. is the only multicolored Entwiner, and also is the only that has more than two choices (namely, choose two entwines into choose four). is the first with an off-color entwine cost, with two mono-blue effects combining into a black effect.
It made further appearances in Phyrexia: All Will Be One Commander and Modern Horizons 3.
==Rules==
==Rulings==
*You decide whether you're paying the entwine cost as you cast the spell.
*If you choose not to pay the entwine cost, you can choose only one mode. If you choose to pay the entwine cost, you choose both modes.
*If you pay the entwine cost, choose targets for both modes as you cast the spell. When the spell resolves, follow the instructions in the order they're written.
==Examples==
==Trivia==
*Mark Rosewater came up with the mechanic in a dream.
==See also==
*Escalate
==References==