It can find those last points of damage when necessary, or dig in to more combo pieces after all other options have been exhausted, or if your hand has been depleted by discard spells
But MTG is much more than a simple card game
As long as you are not the d20 with the highest number, that's a real deal
The playability of the card is nothing to get too excited about, but it does allow you to draw up to three cards should you find yourself without any in your hand
In Magic, preconstructed decks built for the Commander deck are common, and are often released alongside major set releases (and in some cases, on their own)
While this is easiest if you've whittled down your opponent a bit (or set up one of the rare and generally difficult unblockable/undodgeable head shot combos), it's entirely possible, if your opponent got very unlucky with their shuffle, to take their head with your first attack