mobilize mtg cards | Portal and it becomes a Vampire in addition to its other types. Card Name: Mobilize, 6 cards

As such, Nissa can quickly fire off multiple ultimates or resist a few incoming attacks

In the pinch of the end game, the flexibility to not cast it or target your opponent makes this loads better than some of black's most famous spells

I dont think it would ruin the metagame, but Jitte has the potential to significantly harm the overall experience.

23 Blightbelly Rat There are a few rats like the Blightbelly Rat that build nicely into toxic decks, which essentially poison enemy players

[60] FNM tournaments can act as a stepping-stone to more competitive play

That said since the creatures at a very basic level improve when they come back, this mechanic can be a little tricky to balance and design extensively for