If you survive the KT extinction, you get the power to summon and control any dinosaur at will.
So heres the deal.
You get teleported back 66 million years ago 1 day before the meteor hits, to any random land location on earth at least a 1000 miles away from the impact point. You are guaranteed 2 hours of safety from any potential predators. After that youre fair game.
You can take one set of clothing you already own, and a large expedition backpack filled with any supplies you can realistically get as long as you are able to carry it.
Your body gets automatically adjusted to the different air consistency(pre impact) to make it fair.
If you live through the impact and for another month you get transported back to current times and will be imbued with the power to Summon(and unsummon) any dinosaur in any quantity you want under your complete control.
What's your plan? What do you put in the bag?