Thats great value, and this card can be a staple control card in formats like Standard and a worthful addition to Jeskai decks in general, not only dragon-based ones
I had previously some success in private games with Shrine-Zubera decks, so only a five-coloured deck comes into question
Virtue of Strength doesn't produce any mana itself
I'll admit it, when Jumpstart first came out, I took a deep breath
If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores
While putting counters on your creatures is good in itself, the real value here comes from Joraga Warcaller's ability that supplies all other elves controlled by the player with a +1/+1 for each +1/+1 counter on Joraga Warcaller