leeches mtg card NM Homelands Reserve List Rare Poison Counters Magic The Gathering Daybound (If a player casts no spells during their own turn Blessing of Leeches

Sadly, but understandably, these cards are both banned in sanctioned play across the board

You could be really unpleasant and run with poison counters, or create a superfriends deck full of planeswalkers.Whatever route you go, you're probably going to want more effects that proliferate, so cards like Ezuri, Stalker of Spheres and Tekuthal, Inquiry Dominus are a perfect fit

The difference is marginal, but the fact remains that Spike Cannibal is disastrous for the +1/+1 counter player at the table

Nasty, right

While controlling an opponent, you can't make any choices or decisions for that player related to tournament rules

Sure, it isnt a castable card, but the fact that it exists and is so easily generated through the likes of Urza's Saga has transformed Modern and other Eternal formats