The Sojourners are a cycle of Creatures in Alara Reborn. A Sojourner's triggered ability acts as a cycle-triggered ability or as a leaves-play ability, as appropriate. The player who controls the triggered ability is the player who cycled the Sojourner, or the player who last controlled the Sojourner in play. If you cycle a Sojourner, the cycling ability goes on the stack, then the triggered ability goes on the stack on top of it. The triggered ability will resolve before you draw a card from the cycling ability. You can cycle a Sojourner even if there are no targets for the triggered ability. That's because the cycling ability itself has no targets. The cycling ability and the triggered ability are separate. If the triggered ability is countered (with Stifle, for example, or if all its targets have become illegal), the cycling ability will still resolve and you'll draw a card.