Retrievable packer with delayed setting

A downhole tool activation assembly, comprising:

• a block release comprising an end sub threadingly connected to a lower mandrel with a release feature sealingly coupled to the lower mandrel, wherein the release feature comprises a release chamber, an activation chamber, and a fluid stop, wherein a block lug lock is coupled to the release feature in a first position, and wherein the release feature is configured to move the block lug lock to a release position when activated;
• and
• a traveling block comprising a plurality of drag blocks and drag block springs configured to retain the traveling block to a position along an inner surface of a casing, a block mandrel connected to the lower mandrel, a lug rotator ring configured to move axially relative to the block mandrel, and a block lug connected to the lug rotator ring configured to move within a j-slot on the block mandrel in response to the block lug lock moving to the release position;
• wherein the j-slot includes a run-in slot, a motion slot, and an activating slot, wherein the block lug is retained in the run-in slot by the block lug lock, wherein the run-in slot is configured to transfer the block lug from a first position to the motion slot, wherein the motion slot is configured to transfer the block lug to the activating slot, and wherein the activating slot configured to move the block lug to an activating position.