Flying You may cast Worldheart Phoenix from your graveyard by paying {W}{U}{B}{R}{G} rather than paying its mana cost. If you do, it enters the battlefield with two +1/+1 counters on it.
As long as every card in your card pool started the game in your library or in the command zone, lands you control have "{T}: Add one mana of any color."
Return all permanents to their owners' hands. Each player chooses up to seven cards in their hand, then shuffles the rest into their library. Each player loses all unspent mana.
The Aurora is not the only magic capable of remaking a world.
Worldsoul's Rage deals X damage to any target. Put up to X land cards from your hand and/or graveyard onto the battlefield tapped.
"Hoarding supplies, profiting from death and destruction, colluding with the invaders—every one of them betrayed Ravnica in its time of greatest need. They all deserved to die. And I'm not done yet!"
Trample When Worldspine Wurm dies, create three 5/5 green Wurm creature tokens with trample. When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library.
If you would create one or more artifact tokens, instead create those tokens plus an additional Map token. {1}{U}, {T}: Create a token that's a copy of target artifact token you control.
Flying When Wormfang Drake enters the battlefield, sacrifice it unless you exile a creature you control other than Wormfang Drake. When Wormfang Drake leaves the battlefield, return the exiled card to the battlefield under its owner's control.
Players can't play lands. Lands can't enter the battlefield. At the beginning of each upkeep, any player may sacrifice two lands or have Worms of the Earth deal 5 damage to that player. If a player does either, destroy Worms of the Earth.
The ground collapsed, leaving nothing but the great Worms' mucous residues.
{G}: Wormwood Dryad gains forestwalk until end of turn and deals 1 damage to you. {B}: Wormwood Dryad gains swampwalk until end of turn and deals 1 damage to you.
{G}{G}: Wormwood Treefolk gains forestwalk until end of turn and deals 2 damage to you. {B}{B}: Wormwood Treefolk gains swampwalk until end of turn and deals 2 damage to you.
Worn Powerstone enters the battlefield tapped. {T}: Add {C}{C}.
"The strange energy source isn't cosmium after all, but some unidentifiable material that has leached cosmium residue from the walls. Could be dangerous. Could change everything." —Oltec archaeological survey
When Wort, the Raidmother enters the battlefield, create two 1/1 red and green Goblin Warrior creature tokens. Each red or green instant or sorcery spell you cast has conspire.