If you copy a melded creature, though, the copy's mana value is 0
Your community will freerun through ancient locales with their favorite Assassins and take a leap of faiththe past is theirs to explore
In a pinch, you can even destroy your own lands to maximize pressure
You don't need to wait for a five-cost Dragon Fire - anything from a two ink card like Freeze to ostensibly helpful actions like Healing Glow will do the trick

Acererak the Archlich Balthor the Defiled Belbe, Corrupted Observer Bladewing the Risen Boris Devilboon Daxos the Returned Dee Kay, Finder of the Lost Dralnu, Lich Lord Ebondeath, Dracolich Geth, Lord of the Vault Geth, Thane of Contracts Glissa Sunslayer Glissa, Herald of Predation Glissa, the Traitor God-Eternal Bontu God-Eternal Kefnet God-Eternal Oketra God-Eternal Rhonas Gorex, the Tombshell Grimgrin, Corpse-Born Grusilda, Monster Masher Haakon, Stromgald Scourge Hancock, Ghoulish Mayor Hashaton, Scarab's Fist Jarad, Golgari Lich Lord Jason Bright, Glowing Prophet Josu Vess, Lich Knight Korlash, Heir to Blackblade Kotis, Sibsig Champion Kotis, the Fangkeeper Kraum, Ludevic's Opus Kraum, Ludevic's Opus Kraum, Violent Cacophony Lord of Tresserhorn Mikaeus, the Unhallowed Narfi, Betrayer King Neheb, Dreadhorde Champion Neheb, the Eternal Nekusar, the Mindrazer Nevinyrral, Urborg Tyrant Olag, Ludevic's Hubris Polukranos, Unchained Ratadrabik of Urborg Raul, Trouble Shooter Sedris, the Traitor King Sidisi, Regent of the Mire Sidisi, Undead Vizier Skullbriar, the Walking Grave Storrev, Devkarin Lich Temmet, Naktamun's Will Thraximundar Tormod, the Desecrator Tymaret, the Murder King Varina, Lich Queen Venser, Corpse Puppet Vogar, Necropolis Tyrant Wilhelt, the Rotcleaver Zahur, Glory's Past Zul Ashur, Lich Lord
