Aleatory

{1}{R} · Instant

Cast this spell only during combat after blockers are declared. Flip a coin. If you win the flip, target creature gets +1/+1 until end of turn. Draw a card at the beginning of the next turn's upkeep.

Motor: se resuelve a mano

Rulings (2)

If a turn has multiple combat phases, this spell can be cast during any of them as long as it’s after the beginning of that phase’s Declare Blockers Step.
Wizards of the Coast · 2013-09-20
You pick the target on announcement and flip the coin on resolution.
Wizards of the Coast · 2004-10-04