Turn it face up any time for its mana cost if it's a creature card.) Whenever a creature you control but don't own dies, its owner loses 2 life and you gain 2 life
Until end of turn, this creature gains indestructible and gets +1/+1 for each card type among cards in your graveyard
Amzu, Swarms Hunger seems like a nifty new Insect typal commander
The absurd amount of card advantage that Necro offers, essentially allowing you to convert life into cards, makes it one of the strongest card-draw spells that has ever been made
For a mere three mana, this Flash Merfolk can counter activated or triggered abilities and keep them from firing while it's in play
Cards like these, that let you play as many copies as you want in a deck, are often worth a couple bucks even when printed at common or uncommon