First, JPN cards historically trade at a 1540% premium over their ENG equivalents, especially in the SAR/MUR tiers where print quality and foil texture are noticeably stronger on the Japanese version
And Inspiring Leader is a solid Background to include, providing your commander with the ability to pump all creature tokens +2/+2 White and Black (WB): Leaves battlefield matters Leaving the battlefield can occur through a creature dying, getting exiled, blink effects via Flicker, and even phasing out
Choosing the cutest and grossest card of the set is a truly time-honored tradition
Same goes with graveyard hate, board wipes, removal, etc
At best, you can cast this spell after a massive board wipe destroys all creatures in play for a much smaller three mana