Duskwood’s Constitutional

You make eye contact with a ally and use shadowy magic to phase into the ethereal plane until the beginning of the next round. While in between worlds you both can expend a number of your individual hit dice equal to your caster's modifier. Both you and the target will return at the same time and will be replaced into the initiative together wherever the higher of the two were placed before leaving. Finally, you both can be physically placed anywhere within 60ft of  where the spell was originally cast.