msem-instigator

{T}: Add {C}.
{T}, Tap an untapped creature you control: Add one mana of any color. You gain 1 life.

({T}: Add {B} or {R}.)
Fiery Chasm enters the battlefield tapped.

Firehearth Halls enters the battlefield tapped unless you control a basic Mountain.
{T}: Add {R}.
{R}{R}: Firehearth Halls becomes a 1/1 red Dwarf Warrior creature with double strike until end of turn. It's still a land.

Flying, first strike
Whenever this creature transforms into Flame-Tested Dragon or attacks, it deals 1 damage to each creature you don't control.

Flamingo Rock enters the battlefield tapped unless you played it from exile.
{T}: Add {U} or {R}.

As Flooded Depths enters the battlefield, you may pay 2 life. If you don't, Flooded Depths enters the battlefield tapped.
{T}, Sacrifice Flooded Depths: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

({T}: Add {U} or {B}.)
Flooded Morass enters the battlefield tapped unless you control a basic Island or a basic Swamp.

Reach, trample
Whenever this creature transforms into Flourishing Companion or attacks, untap all lands you control.

({T}: Add {R} or {G}.)
Flourishing Crevasse enters the battlefield tapped unless you control a basic Mountain or a basic Forest.

({T}: Add {G}.)
As Flourishing Dunes enters the battlefield, you may pay 1 life. If you don't, Flourishing Dunes enters the battlefield tapped.

Flourishing Forest enters the battlefield tapped.
As Flourishing Forest enters the battlefield, choose a basic land type.
Flourishing Forest is the chosen type in addition to its other types.

Flourishing Island enters the battlefield tapped.
As Flourishing Island enters the battlefield, choose a basic land type.
Flourishing Island is the chosen type in addition to its other types.

Flourishing Lowlands enters the battlefield tapped.
{T}: Add {G}.
Desertcycling {1}{G} ({1}{G}, Discard this card: Search your library for a Desert card, reveal it, and put it into your hand, then shuffle.)

Flourishing Mountain enters the battlefield tapped.
As Flourishing Mountain enters the battlefield, choose a basic land type.
Flourishing Mountain is the chosen type in addition to its other types.

Flourishing Plains enters the battlefield tapped.
As Flourishing Plains enters the battlefield, choose a basic land type.
Flourishing Plains is the chosen type in addition to its other types.

Flourishing Swamp enters the battlefield tapped.
As Flourishing Swamp enters the battlefield, choose a basic land type.
Flourishing Swamp is the chosen type in addition to its other types.

As Flourishing Waterways enters the battlefield, you may reveal a Forest or Island card from your hand. If you don't, Flourishing Waterways enters the battlefield tapped.
{T}: Add {G} or {U}.

{T}: Add {C}.
{T}, Sacrifice Fluctuating Locale: Rediscover a land card. (Look at the top card of your library. You may reveal it and put it into your hand if it's a land card. Otherwise, put it back or into your graveyard.)

{T}: Add {B} or {R}. You lose 1 life unless you have less life than an opponent.

Forbidding Isle enters the battlefield tapped unless you control a Swamp.
{T}: Add {U} or {R}.

As Foreboding Ruins enters the battlefield, you may reveal a Swamp or Mountain card from your hand. If you don't, Foreboding Ruins enters the battlefield tapped.
{T}: Add {B} or {R}.

Forgotten Attic enters tapped.
When Forgotten Attic enters the battlefield, look at the top card of your library. You may put it into your graveyard.
{T}: Add {U} or {B}.

Forgotten Cryovault enters the battlefield tapped unless you have two or more opponents.
{T}: Add {U} or {B}.

{T}: Add {C}.
{T}: Add {C}{C}. Spend this mana only to cast spells from your graveyard.