Rupture Spire enters the battlefield tapped.
When Rupture Spire enters the battlefield, sacrifice it unless you pay .
: Add one mana of any color.

Whenever you gain life, target opponent loses that much life.

Destroy target land. Scorch the Fields deals 1 damage to each Human creature.

Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.
Landfall — If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.

Add .

Flying
Prevent all combat damage that would be dealt to Seraph of the Sword.

Devoid (This card has no color.)
Serpentine Spike deals 2 damage to target creature, 3 damage to another target creature, and 4 damage to a third target creature. If a creature dealt damage this way would die this turn, exile it instead.

Whenever Skyclaw Thrash attacks, flip a coin. If you win the flip, Skyclaw Thrash gets +1/+1 and gains flying until end of turn.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

When Sparkmage Apprentice enters the battlefield, it deals 1 damage to any target.

Counter target spell with converted mana cost X. (For example, if that spell's mana cost is , X is 5.)

Flying
When Sphinx Summoner enters the battlefield, you may search your library for an artifact creature card, reveal it, and put it into your hand. If you do, shuffle your library.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
You may have Spinebiter assign its combat damage as though it weren't blocked.

Destroy target creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Sprouting Thrinax dies, create three 1/1 green Saproling creature tokens.

Flying
: Steel Hellkite gets +1/+0 until end of turn.
: Destroy each nonland permanent with converted mana cost X whose controller was dealt combat damage by Steel Hellkite this turn. Activate this ability only once each turn.

Flash
This spell can't be countered.
Creature spells you control can't be countered.
Other creatures you control have trample.

Return an instant card at random from your graveyard to your hand.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

When you're dealt combat damage, sacrifice Swarmborn Giant.
: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)
As long as Swarmborn Giant is monstrous, it has reach.

Creatures you control have haste.
Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card.