Perhaps the most interesting theme here for long-time players is its unique spin on those token-production spells
Once you have an idea of how to play the game and see the kinds of decks that your opponents use, think about what deck you want to make
Hauntwoods Shrieker can work in tandem with Growing Dread by constantly giving you manifest dread triggers when it attacks
I would definitely start any playtesting gauntlet with such a strategy (though I guess since paper playtesting doesnt really exist anymore, maybe just think about this deck, and be ready, since youre gonna run into it on ladder)
However, doing that isnt necessary, as you can simply play naturally strong decks that have the capacity to swap around certain cards for various matchups
Still, it fits my criteria of being an older rare and has a surprisingly useful effect