結界
:振勵1。(於由你操控的生物中選擇一個防禦力最小的生物,在其上放置一個+1/+1指示物。)
You determine which creature to put counters on as the spell or ability that instructs you to bolster resolves. That could be the creature with the bolster ability, if it’s still under your control and has the least toughness.