Time Sieve [Alara Reborn]

Time Sieve [Alara Reborn]Set: Alara Reborn Type: Artifact Rarity: Rare Cost: {U}{B} {T}, Sacrifice five artifacts: Take an extra turn after this one. "I pray that I am never considered useless or old." Sharuum the Hegemon

Set: Tempest Type: Land Rarity: Rare {T}: Add one mana of any type that a land you control could produce

Smoldering Marsh enters the battlefield tapped unless you control two or more basic lands

Ogre Ascendant

{2}: Sludge Crawler gets +1/+1 until end of turn

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {0} {T}

" —Dromar

Set: Dark Ascension Type: Sorcery Rarity: Rare Cost: {5}{W} Exile all nonland permanents target player controls

where the bones of all sinners wait for Ragnarok

{T}: Exile another target creature

Set: XY: BREAKthrough Type: Colorless Rarity: Uncommon

You may cast it without paying its mana cost if it's a spell with lesser mana value

is not the danger