Helena, Survivor Ascendant

Ascend
{t}: The next time a creature would enter the battlefield under your control this turn, if you cast it and you don’t control another permanent with the same name, create a token copy of that creature, except the token is a colorless Dossier tribal enchantment, has “As long as you have the city’s blessing, whenever a nontoken creature that shares a creature type with this permanent enters, it explores.” and loses all other abilities.