The arrow will be red if the spell/ability's activator is an opponent of the target or its controller, and blue if targeting an ally of the target or its controller
The card advantage that this three-mana artifact can provide throughout a long game makes it a must-have for any green deck with creatures, at least in the sideboard
Its passive ability, which puts a +1/+1 counter on a creature each time you gain life, is an easy way to combo off with cards like Walking Ballista
That means getting to play your best removal card again, or breathing new life into a creature that got countered
If you like this box you can also check out my other deck boxes: v3 and v4
Shelinda, Yevon Acolyte* Plenty of counters fun with Shelinda who either grows or pumps others depending on their size when they come join the party, fitting right into the Final Fantasy 10 Commander deck