That's because Bloodtracker's triggered ability checks the creature's existence just before it leaves the battlefield, and it still has all those counters on it at that point
A double-heads, meanwhile, will immediately end its trainer's own turn, creating a significant gamble of high risk versus high reward
Sometimes, new supplemental sets become legal in the format
This is thanks to the rebound keyword, which allows the card to be cast a second time at the beginning of your next upkeep
Oddly Remand is about as soft a counterspell as you will find on this list with even the likes of Force Spike fairly frequently being able to get your opponents cards in the bin
A standard raw, ungraded Poncho-Wearing Pikachu #207/XY-P currently goes for an unbelievable starting market baseline of $5,836 on price tracking networks