With so many Basic Pokemon having an average of 60 HP, Seadra is only one Giovanni away from scoring you a free point or even closing games
These are cards that will always help you out in a pinch, give you control of the board, help you go through your deck faster so you can get the cards you want, etc
If you picked up the precon built around Morska, Undersea SleuthMorska, Undersea Sleuth last year, True Ancestry would be a beneficial upgrade for it
Youd be far from the first player to be fed up having their spells countered
This isn't the most exciting equipment in the world if you have to pay the full three mana to cast it and then two more to equip, but doing both for just two mana and cheating the otherwise detrimental discard effect of another card sounds pretty appealing to me in the right deck
You can only use this effect of "Favorite Hero" once per turn