Some of these cards don't work. For example, look at Stalking Yeti:
Stalking Yeti {2RR} |Snow Creature -- Yeti| 3/3. When Stalking Yeti comes into play, if it's in play, it deals damage equal to its power to target creature an opponent controls and that creature deals damage equal to its power to Stalking Yeti. / 2S: Return Stalking Yeti to its owner's hand. Play this ability only any time you could play a sorcery.
Some cards were errata'ed to not work this way by the use of the intervening if clause "if it's in play". Faceless Butcher doesn't have this clause, so you can do it.