Likely because it holds one of the most valuable Eeveelution cards of all time (the third most valuable, in fact): Moonbreon
This has a very simple effect: you gain one lore while your opponent loses one
Alternatively, if you're at two life after removing the second lore counter, you may choose to attack to try and force a trade, knowing you're dead to the creatures third chapter next turn
Rasputin makes for a very interesting flicker commander, as through blinking it and causing it to re-enter the battlefield, its counters are reset, effectively providing a significant mana ramp
the best way to discover what Magic has to offer, they're perfect for building decks, playing games with friends, and are tons of fun to open Fantastic Family I'm all for family, so couldn't the characters be a little more artfully tied to each other
If you are capable of healing your cards, through items, actions, or character abilities, and Beast, Tragic Hero has damage on them at the start of your turn, you can let them attack and then heal them, allowing you to still benefit from the increased strength but keeping them healthy enough to stick around