{T}: Add {C}.

{T}: Add {W} or {B}. Caves of Koilos deals 1 damage to you.

Each player returns a creature they control to its owner's hand.

{R}: Target creature gets +1/+0 until end of turn.

Lightning Surge deals 4 damage to any target.

Threshold -- If seven or more cards are in your graveyard, instead Lightning Surge deals 6 damage to that permanent or player and the damage can't be prevented.

Flashback {5}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}: Add {C}.

{1}, {T}, Sacrifice Mind Stone: Draw a card.

{0}: The next 1 damage that would be dealt to Nomads en-Kor this turn is dealt to target creature you control instead.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Rathi Dragon enters the battlefield, sacrifice it unless you sacrifice two Mountains.

When Siege-Gang Commander enters the battlefield, create three 1/1 red Goblin creature tokens.

{1}{R}, Sacrifice a Goblin: Siege-Gang Commander deals 2 damage to any target.

{U}{U}, {T}, Discard a card: Counter target creature spell.

Suq'Ata Firewalker can't be the target of red spells or abilities from red sources.

{T}: Suq'Ata Firewalker deals 1 damage to any target.

Cumulative upkeep {1}{B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of each upkeep, if Tombstone Stairwell is on the battlefield, each player creates a 2/2 black Zombie creature token with haste named Tombspawn for each creature card in their graveyard.

At the beginning of each end step or when Tombstone Stairwell leaves the battlefield, destroy all tokens created with Tombstone Stairwell. They can't be regenerated.