Rivaz of the Claw 


Legendary Creature — Lizard Warlock
Menace
{T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon creature spells.
Once during each of your turns, you may cast a Dragon creature spell from your graveyard.
Whenever you cast a Dragon creature spell from your graveyard, it gains "When this creature dies, exile it."
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Cards that do something similar expected a card that isn't here?
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Shaman of Forgotten Ways 100%
$8.63#6504
"{T}: Add two mana in any combination of colors. Spend this mana only to cast creature spells."
Hermitic Herbalist 100%
$0.18#7207
"{T}: Add two mana in any combination of colors. Spend this mana only to cast Lesson spells."
Interdimensional Web Watch 100%
$0.37#7059
"{T}: Add two mana in any combination of colors. Spend this mana only to cast spells from exile."
Gwenna, Eyes of Gaea 100%
$4.83#1686
"{T}: Add two mana in any combination of colors. Spend this mana only to cast creature spells or activate abilities of creature sources."
Smokebraider 100%
$0.25#5056
"{T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals."
Flamebraider 100%
$0.19#5856
"{T}: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elemental sources."
Altar of the Lost 100%
$0.07#23611
"{T}: Add two mana in any combination of colors. Spend this mana only to cast spells with flashback from a graveyard."
Orb of Dragonkind 86%
$2.11#3683
"{1}, {T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons."
Arena Rector 85%
$9.81#9100
"When this creature dies, you may exile it. If you do, search your library for a planeswalker card, put it onto the battlefield, then shuffle."
Flameskull 85%
$0.28#21190
"When this creature dies, exile it. If you do, exile the top card of your library. Until the end of your next turn, you may play one of those cards."
Gamekeeper 84%
$0.23#13513
"When this creature dies, you may exile it. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and put all other cards revealed this way into your graveyard."
Great Hall of the Citadel 84%
$0.38#1834
"{1}, {T}: Add two mana in any combination of colors. Spend this mana only to cast legendary spells."
Paramecia Coloniex 84%
$0.17#19355
"When this creature dies, you may exile it. When you do, put target creature card from your graveyard on top of your library."
Cavalier of Thorns 84%
$0.24#5414
"When this creature dies, you may exile it. If you do, put another target card from your graveyard on top of your library."
Academy Rector 84%
$78.64#5607
"When this creature dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle."
Epochrasite 82%
$0.37#14826
"When this creature dies, exile it with three time counters on it and it gains suspend."
Hoarding Dragon 81%
$0.13#8995
"When this creature dies, you may put the exiled card into its owner's hand."