You dont have to target yourself, and you dont even need to target them if theyre running low
Some combos include: Fling - 2 CMC, Instant, requires the user to sacrifice a creature and then deals damage equal to its power to any target Greater Good - 4 CMC, Enchantment, makes the owner draw cards equal to the power of any creature sacrificed to trigger this effect Goblin Tunneler - 2 CMC, 1/1 Creature, it can be tapped to make target creature with power 2 or less unblockable for the turn, which would apply before combat Escape Tunnel - Land, it can be tapped and sacrificed alongside paying 2 colorless mana to make target creature unblockable for the turn How Final Fantasy's Jumbo Cactuar Breaks Magic: The Gathering There are many possible combos for Jumbo Cactuar to become a broken MTG card
I would freak out if I got this card in a pack, and it doesnt hurt that Second Star to the Right is one of the best new cards in Ursulas Return
But it also lends itself to broken infinite combosI bet you can get started with Tezzeret the Seeker and a way to make Gogo an artifact
Zidane, Tantalus Thief Zidane, Tantalus Thief looks awesome
8 Fairy Godmother: Mystic Armorer 41/204, Amethyst Cinderella's magical benefactor gets a Legendary card with Fairy Godmother: Mystic Armorer, which shows her conjuring up a beautifully intricate sword