These are all definitely worth opening from a booster pack now and throughout the set's time in Standard
Its a cool card to play in decks that use proliferation, counters, and even tokens, considering that sometimes just placing a +1/+1 counter on everybody is worth a card
With that being said, having flexible removal means you can cover a wider array of problems with less cards
For example, offering free shipping on orders over $50 or throwing in an extra rare card with every purchase could be great ways to incentivize customers while still making money off each sale
I've added the limited side event playment from GP Melbourne in Limited Playmats
To double a creature's toughness, that creature gets +0/+X, where X is that creature's toughness as the triggered ability resolves