: Choose a color. Add one mana of that color unless any player pays . Activate only as an instant.

Activated abilities of nontoken Rebels cost an additional "Sacrifice a land" to activate.

Mercenaries don't untap during their controllers' untap steps.

Enchant land
Enchanted land has ": Counter target spell unless its controller pays ."

Lands target player controls don't untap during their next untap step.

Vintara Snapper has shroud as long as you control no untapped lands. (It can't be the target of spells or abilities.)

, Sacrifice a land: Draw a card. Any player may activate this ability.

: Target attacking creature gets -1/-0 until end of turn.

Enchant land
Enchanted land has ": Prevent the next 1 damage that would be dealt to any target this turn."

: Nakaya Shade gets +1/+1 until end of turn unless any player pays .

Prevent all damage that would be dealt to Glittering Lion.
: Until end of turn, Glittering Lion loses "Prevent all damage that would be dealt to Glittering Lion." Any player may activate this ability.

Enchant land
Enchanted land has ": This land deals 1 damage to each creature and each player."

Wing Storm deals damage to each player equal to twice the number of creatures that player controls with flying.

You may discard a Plains card rather than pay this spell's mana cost.
Destroy target artifact or enchantment.

: Tap all lands you control. Chimeric Idol becomes a 3/3 Turtle artifact creature until end of turn.

: The next time target attacking creature would deal combat damage to Shield Dancer this turn, that creature deals that damage to itself instead.

Defender (This creature can't attack.)
: Return Quicksilver Wall to its owner's hand. Any player may activate this ability.

: Return target creature card from a graveyard to its owner's hand. Any player may activate this ability but only as a sorcery.

: Target creature gains haste until end of turn. (It can attack this turn.)

At the beginning of each player's end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.

Defender (This creature can't attack.)
: Destroy Wall of Vipers and target creature it's blocking. Any player may activate this ability.

, Sacrifice two lands: Destroy target land.

Enchant land
Enchanted land has ": Target creature gets +1/+1 until end of turn."

: Regenerate Chilling Apparition.
Whenever Chilling Apparition deals combat damage to a player, that player discards a card.

Hollow Warrior can't attack or block unless you tap an untapped creature you control not declared as an attacking or blocking creature this combat. (This cost is paid as attackers or blockers are declared.)

At the beginning of your upkeep, sacrifice Darba unless you pay .

Enchant creature
Enchanted creature can block any number of creatures.

Whenever one or more creatures attack you, if Reveille Squad is untapped, you may untap all creatures you control.

All combat damage that would be dealt to you this turn by target unblocked creature is dealt to its controller instead.

Draw three cards. Then if any player pays , discard three cards.

At the beginning of your end step, if you control no untapped lands, you gain 2 life.

You may discard a Swamp card rather than pay this spell's mana cost.
Choose a creature type. All creatures of that type get -1/-1 until end of turn.

Enchant land
Enchanted land has ": This land deals 1 damage to any target."

You may discard a Mountain card rather than pay this spell's mana cost.
Flameshot deals 3 damage divided as you choose among one, two, or three target creatures.

You may discard a Forest card rather than pay this spell's mana cost.
Prevent all combat damage that would be dealt by unblocked creatures this turn.

Flying
When Windscouter attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)