When it attacks, sacrifice it at end of combat.) At the beginning of your upkeep, put all creature cards exiled with Gisa onto the battlefield under your control
The art feels so powerful and imposing -- and the card's mechanics feel the exact same way
Unfortunately, given the era and desirability of its cards, it can be difficult to find many listings in NM condition, as sales primarily range from damaged to LP, capping out at about $100

Tetran" #1969 #6499 "Nanobreaker" #1970 #6500 "Rapid-Fire Magician" #1971 #6501 "Beiige, Vanguard of Dark World" #1972 #6502 "Broww, Huntsman of Dark World" #1973 #6503 "Brron, Mad King of Dark World" #1974 #6504 "Sillva, Warlord of Dark World" #1975 #6505 "Goldd, Wu-Lord of Dark World" #1976 #6506 "Scarr, Scout of Dark World" #1977 #6507 "Familiar-Possessed - Aussa" #1978 #6508 "Familiar-Possessed - Eria" #1979 #6509 "Familiar-Possessed - Hiita" #1980 #6510 "Familiar-Possessed - Wynn" #1981 #6511 "Pot of Avarice" #1982 #6512 "Dark World Lightning" #1983 #6514 "Boss Rush" #1984 #6515 "Gateway to Dark World" #1985 #6516 "The Forces of Darkness" #1986 #6517 "Dark Deal" #1987 #6518 "Simultaneous Loss" #1988 #6519 "Weed Out" #1989 #6520 "The League of Uniform Nomenclature" #1990 #6521 "Roll Out!" #1991 #6522 "Non-Fusion Area" #1992 #6523 "Level Limit - Area A" #1993 #6524 "Armed Changer" #1994 #6527 "Elemental Hero Necroshade" #1995 #6528 "Hero Heyro" #1996 #6529 "Elemental Hero Madballman" #1997 #6530 "Dark Eradicator Warlock" #1998 #6531 "Mythical Beast Cerberus" #1999 #6532 "Magical Blast" #2000 #6535 "Elemental Hero Steam Healer" #2001 #6536 "Burst Return" #2002 #6537 "Bubble Blaster" #2003 #6538 "Bubble Illusion" #2004 #6539 "Clay Charge" #2005 #6540 "Armed Dragon LV10" #2006 #6541 "Magical Mallet" #2007 #6542 "Inferno Reckless Summon" #2008 #6545 "Rancer Dragonute" #2009 #6546 "Mistobody" #2010 #6547 "Axe Dragonute" #2011 #6550 "White Horns D." #2012 #6563 "Uria, Lord of Searing Flames" #2013 #6564 "Hamon, Lord of Striking Thunder" #2014 #6565 "Raviel, Lord of Phantasms" #2015 #6566 "Elemental Hero Neo Bubbleman" #2016 #6567 "Hero Kid" #2017 #6568 "Cyber Barrier Dragon" #2018 #6569 "Cyber Laser Dragon" #2019 #6570 "Ancient Gear" #2020 #6571 "Hero Heart" #2021 #6572 "Magnet Circle LV2" #2022 #6574 "Ancient Gear Drill" #2023 #6575 "Phantasmal Martyrs" #2024 #6576 "Cyclone Boomerang" #2025 #6577 "Photon Generator Unit" #2026 #6578 "Ancient Gear Castle" #2027 #6580 "Miracle Kids" #2028 #6581 "Attack Reflector Unit" #2029 #6582 "Damage Condenser" #2030 #6587 "Ancient Gear Cannon" #2031 #6588 "Proto-Cyber Dragon" #2032 #6589 "Adhesive Explosive" #2033 #6590 "Machine King Prototype" #2034 #6591 "B.E.S

Generally, decks will only play these 4mv cards if they anticipate needing a serious amount of mana
But that is just a personal opinion