Gitaxian Tracker

Whenever a loyalty ability of a planeswalker is activated while gitaxian tracker is in your hand,
you may reveal it. If you do, search your library
for a hybrid creature, with cmc less than this,
reveal that creature and put them both
into your hand. Shuffle.
Whenever a loyalty ability is activated,
you may reduce the cost of all hybrids
in your hand by {1} until the end of your next
main phase.