Many Partings | Illustration by Dmitry Burmak There are roughly 140 MTG sets if you count the main and Core sets, but exclude supplemental sets like Commander precon decks, Planechase, Conspiracy, Un-sets, Duel Decks, etc
Hidetsugus Poison Rite Decks using poison counters are typically focused on quickly eliminating opponents, making Hidetsugu's Poison Rite a perfect addition
Moreover, it features some great Squirrels and Squirrel Tribal support cards
There are tons of uses for them, for instance, lets say your opponent has a 12/12 creature with deathtouch and you have two 1/1 tokens with deathtouch
This way, you can access 2 more mana if timed correctly that can be used to cast an X-mana spell like Sphinx's Revelation
If a spell is exiled this way, it's removed from the stack and thus will not resolve