MTG

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the nex...

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

({T}: Add {R}.)

Nonbasic lands are Mountains.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Counter target...

As an additional cost to cast this spell, pay X life. All creatures get -X/-X until end of turn.

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) Remove a charge counter from Pentad Pri...

When Deepglow Skate enters the battlefield, double the number of each kind of counter on any number of target permanents.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

This creature's power and toughness are each equal to the number of creatures you control.

Sacrifice this creature: Add {C}.

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 o...

When Thraben Inspector enters the battlefield, investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: D...

Whenever a creature enters the battlefield, you may add an amount of {C} equal to the number of creatures you control that share a creature type wi...

({U/P} can be paid with either {U} or 2 life.) You may have Phyrexian Metamorph enter the battlefield as a copy of any artifact or creature on the ...

Walking Ballista enters the battlefield with X +1/+1 counters on it. {4}: Put a +1/+1 counter on Walking Ballista. Remove a +1/+1 counter from Walk...

{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)

({T}: Add {U}.)