Fate Reforged — Rare
Sandsteppe Mastodon rulings:
11/24/2014 : Bolster itself doesnt 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 Skycaptains bolster ability.
11/24/2014 : You determine which creature to put counters on as the spell or ability that instructs you to bolster resolves.