However, the type of core the cards have is often relevant as well
When and how did you make the transition from playing MTG to poker
This card can be tapped to allow you to draw a card and discard a card, or you can pay four mana and tap it to transform it as long as there are four or more permanent types in your graveyard
Maybe you target The Ur-Dragon after your opponent has cast Crux of Fate, for example
Like many other effects, this lasts as long as the card is on the battlefield, but the cool part is that once its removed, the effect doesnt end until the end of the turn
This white creature could do something in a Hylda of the Icy Crown Commander deck or serve as a disruptive piece for a spirit deck that needs to stop a blocker, but its too narrow for general play