Return target nonland permanent you don't control to its owner's hand.
Overload 6 (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each".)
Extort (Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain that much life.)
Whenever you tap a Swamp for mana, add to your mana pool. (in addition to the mana the land produces.)
When Worldspine Wurm dies, put three 5/5 green Wurm creature tokens with trample onto the battlefield.
When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.
Whenever Hellkite Tyrant deals combat damage to a player, gain control of all artifacts that player controls.
At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.
[+1]: Tap target permanent, then untap another target permanent.
[-2]: Ral Zarek deals 3 damage to any target.
[-7]: Flip five coins. Take an extra turn after this one for each coin that comes up heads.