toxtricity pokemon card value holofoil pattern or surface detail) Toxtricity VMAX | Rebel Clash

You get an infinite combo

As long as Necrotic Ooze is on the battlefield, it has all activated abilities of all creature cards in all graveyards

The baseline of a 5 mana 4/4 trample is too inefficient and the madness cost is manageable with free outlets but makes it relatively difficult to use with things like Faithless Looting, Fauna Shaman or more expensive discard effects

Preventing all combat damage allows for these mind games, because you do look incapable and cornered, until they swing for lots of damage and you tap your last remaining land

Bundle and save

If you put a counter on a permanent that has no mechanical relevance, it just sits there waiting to one day be useful