At the start of your combat step, all your Merfolk creatures explore, revealing the top card of your library and putting it into your hand if its a land, or giving that Merfolk a +1/+1 counter and then letting you choose to keep it on top of your deck or into your graveyard
Granted many of these are reprints, so we have some idea of how theyll play
Its built to help you format your custom cards like a real Magic: The Gathering card: mana cost, type line, rules text, power/toughness, and all the layout choices that keep your creation readable
Despite the sheer quantity of absurdly good Zombie Tribal support cards already, Archghoul of Thraben makes a strong case for getting a spot in the 99
Recently, cards that offer typal bonuses to more than one creature type have become more common