Target player sacrifices an enchantment of their choice. Bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)
"To survive, you must seize every opportunity."n—Daghatar the Adamant
You determine which creature to put counters on as the spell or ability that instructs you to bolster resolves.
24-11-2014
wotc
You can target any player with Abzan Advantage, even if that player doesn't control an enchantment.
24-11-2014
wotc
The enchantment will have already left the battlefield when you bolster 1.
24-11-2014
wotc
Bolster itself doesn't target any creature, though some spells and abilities that bolster may have other effects that target creatures. For example, you could put counters on a creature with protection from white with Abzan Skycaptain's bolster ability.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.