Cheapest priced copy (Modern Horizons): $2.99 at Card Kingdom, near mint, their price list as of .
Kaya's Guile 
Instant · Rare · Modern Horizons · #205
Choose two —
• Each opponent sacrifices a creature of their choice.
• Exile all opponents' graveyards.
• Create a 1/1 white and black Spirit creature token with flying.
• You gain 4 life.
Entwine {3} (Choose all if you pay the entwine cost.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $2.99 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 205 | Rare | $2.99 | $6.99 |
4 rulings from Wizards of the Coast
- 14 June 2019As the first mode is performed, first the opponent whose turn it is (or, if it’s not an opponent’s turn, the next opponent in turn order) chooses a creature they control, then each other opponent in turn order does the same, knowing the choices made before them. Then all the chosen creatures are sacrificed at the same time.
- 14 June 2019If Kaya’s Guile isn’t entwined, you must choose two different modes.
- 14 June 2019Each chosen mode is performed in the order specified. Abilities that trigger while one mode is being performed won’t be put onto the stack until Kaya’s Guile has finished resolving.
- 14 June 2019A creature sacrificed for the first mode of Kaya’s Guile will be exiled if it ends up in an opponent’s graveyard and the second mode was also chosen.