What the best Sephiroth deck is remains unclear
Sure, you can easily whiff and hit lands or spells that aren't useful (Counterspell, Comet Storm, etc.) but generally speaking this ability is going to be well worth using
Let our blood be their mulch, our flesh their soil. Victor, Valgavoths seneschal Illustrated by Deruchenko Alexander Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
The easiest battles to flip, Invasion of Gobakhan and Invasion of Zendikar, each enter play with three defense counters
Your removal and draw suites let you outlast both, with Terror in particular lacking a deep enough threat pool to really oppose you
That's likely due to Tolkien's high-fantasy world being so similar that one could imagine Middle-earth as just another of Magic's many planes