It costs four less mana, but it only puts a -1/-1 counter on one creature when it enters the battlefield
"Parallel Lives" is a powerful Magic card that's only been reprinted a couple of times since its initial release in the 2011 set Innistrad
Mysterious Hat
Mass DiminishMass Diminish does not seem ideal for slower, controlling, defensive decks, as they will usually want to bounce or wipe the board to deal with creatures more effectively, and often prefer to interact with things at instant speed
In fact, one of them is available in the MTG Edge of Eternities Commander precons, so its incredibly easy to find if you dont want to crack packs looking for it
Katara, Heroic Healer puts a +1/+1 counter on each other creature you control when she enters, making her a perfect candidate for the Sword of Hearth and Home blink effect to trigger it again