For example, if you have four Iron Crown ex in play and an Iron Hands ex in your active spot with a Future Booster Energy Capsule attached, the Iron Hands exs Amp You Very Much attack is now dealing 220 HP a pop enough to one-shot many major threats in todays standard metagame.
A player with a Junk Token may tap and sacrifice it to exile the top card of their Library
Other examples of these auras are Combat Research, Keen Sense, and Ophidian Eye
Creature - Soldier Elephant Dragonhawk, Fate's Tempest Flying Whenever Dragonhawk enters or attacks, exile the top X cards of your library, where X is the number of creatures you control with power 4 or greater
Lillies Determination 184/132 (Special Illustration Rare) Another entry for Lillies Determination, and this ones both the most valuable and in-demand, going for around $225
For more of the latest market-friendly prices in the Pokmon TCG, you can still grab the new Perfect Order Elite Trainer Booster Box for under $90