Flying

Whenever Ancient Brass Dragon deals combat damage to a player, roll a d20. When you do, put any number of target creature cards with total mana value X or less from graveyards onto the battlefield under your control, where X is the result.

Flying

Whenever Ancient Gold Dragon deals combat damage to a player, roll a d20. You create a number of 1/1 blue Faerie Dragon creature tokens with flying equal to the result.

{T}: Add {C}{C}. Ancient Tomb deals 2 damage to you.

Red

Flying

{T}: Add {C}.

{3}, {T}: Draw a card. Activate only if you control a creature with power 4 or greater.

Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

If you control two or more other lands, Cave of the Frost Dragon enters the battlefield tapped.

{T}: Add {W}.

{4}{W}: Cave of the Frost Dragon becomes a 3/4 white Dragon creature with flying until end of turn. It's still a land.

As Cavern of Souls enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Sliver creatures you control have flying and haste.

Flying

Equipped creature has flying and "You can't lose the game and your opponents can't win the game."

Reconfigure {5} ({5}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Sliver creatures you control have "When this creature enters the battlefield, you may exile target creature an opponent controls until this creature leaves the battlefield."

All Slivers have shroud. (They can't be the targets of spells or abilities.)

Dark Depths enters the battlefield with ten ice counters on it.

{3}: Remove an ice counter from Dark Depths.

When Dark Depths has no ice counters on it, sacrifice it. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

{T}: Add {W}.

Channel -- {2}{W}, Discard Eiganjo, Seat of the Empire: It deals 4 damage to target attacking or blocking creature. This ability costs {1} less to activate for each legendary creature you control.

Colorless

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

Whenever a Sliver deals damage, its controller gains that much life.

{T}: Add {W}.

When Flagstones of Trokair is put into a graveyard from the battlefield, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle.

Menace

Ward--Sacrifice a creature.

Forge, Neverwinter Charlatan gets +2/+0 for each Treasure you control.

Whenever one or more players sacrifice one or more creatures, you create a tapped Treasure token. This ability triggers only once each turn.

Sliver creatures you control have flying.

All Slivers have "{T}: Add one mana of any color."

All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."

All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

Each Sliver card in each player's hand has slivercycling {3}.

Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life.

{T}: Add {C}.

{4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

{T}: Add {C}{C}. Spend this mana only to activate abilities.

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Investigate X times. (Then exile this card. You may cast the creature later from exile.)

Sliver creatures you control have "{T}: Add one mana of any color."

All Sliver creatures get +1/+1.

All Slivers have "{3}, Sacrifice this permanent: Destroy target permanent."

All Slivers have "Whenever this permanent becomes the target of a spell an opponent controls, you may draw a card."

Target opponent exiles the top X cards of their library face down. You may look at and play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any type to cast it.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a legendary spell.

{T}: Add one mana of any color among legendary permanents you control.

{3}, {T}, Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

When Portal to Phyrexia enters the battlefield, each opponent sacrifices three creatures.

At the beginning of your upkeep, put target creature card from a graveyard onto the battlefield under your control. It's a Phyrexian in addition to its other types.

Sliver creatures you control get +1/+1.

This spell can't be countered.

Sliver spells can't be countered.

All Sliver creatures have "This creature gets +1/+1 as long as you control a Swamp."

All Slivers have "{B}: Regenerate this permanent." (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Slivers you control have flying and "Whenever you draw a card, this creature deals 1 damage to any target" and "{T}: Draw a card."

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

Sliver creatures you control have lifelink. (Damage dealt by a Sliver creature you control also causes you to gain that much life.)

All Slivers have "{T}: Tap target permanent."

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Up to one target creature can't block for as long as you control There and Back Again. The Ring tempts you.

II -- Search your library for a Mountain card, put it onto the battlefield, then shuffle.

III -- Create Smaug, a legendary 6/6 red Dragon creature token with flying, haste, and "When this creature dies, create fourteen Treasure tokens."

{T}: Add {C}.

{2}, {T}: Thespian's Stage becomes a copy of target land, except it has this ability.

Valakut, the Molten Pinnacle enters the battlefield tapped.

Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target.

{T}: Add {R}.

You may have Vesuva enter the battlefield tapped as a copy of any land on the battlefield.

As Ward Sliver enters the battlefield, choose a color.

All Slivers have protection from the chosen color.

{T}: Add {C}.

{5}, {T}, Pay 1 life: Create a 1/1 white and black Human Cleric creature token.

{5}, {T}, Sacrifice five creatures: Transform Westvale Abbey, then untap it.

Flying, lifelink, indestructible, haste