Szymborska, The Key & Coin

Flying, Devour, Extort, etb with a Shield token
•If your Devotion to W,B, or G is >3: Whenever
a card you control grants creatures a feature that
is "until end of turn": Instead, you may have
them gain that feature as a token.
•Whenever you sacrifice something, Gain one life.
•{4}, put a Shield token on a creature, as a sorcery
{bull}At the end of every turn, create one Cache tokens, tapped.