<p>Its converted mana cost is 9. Blast of Genius will deal 9 damage. <a href="http://mtgsalvation.gamepedia.com/Split_cards" rel="nofollow noreferrer">Rule 708.4</a> says</p>
<blockquote>
<ul>
<li><p><strong>708.4.</strong> In every zone except the stack, the characteristics of a split card are those of its two halves combined. This is a change from previous rules.</p>
<ul>
<li><strong>708.4b</strong> The mana cost of a split card is the combined mana costs of its two halves. A split card’s colors and converted mana cost are determined from its combined mana cost.</li>
</ul>
</li>
</ul>
</blockquote>
<p>Catch has a mana cost of {1}{U}{R} and Release has a mana cost of {4}{R}{W}, so the combined mana cost is {5}{W}{U}{R}{R} and the converted mana cost is 9.</p>

CC BY-SA 4.0
2015-03-08T23:19:12.807Z
2018-08-09T22:18:10.903Z
2020-06-17T09:01:24.697Z
murgatroid99
<p>It has two converted mana costs, 3 and 6. It will deal 3 damage and 6 damage simultaneously, which is the same as doing 9 damage.</p>
<hr />
<p>Outside of the stack, Catch // Release has two CMCs.</p>
<blockquote>
<p>708.2. In every zone except the stack, split cards have two sets of characteristics and two converted mana costs. [...]</p>
<p>708.5. Anything that asks for a particular characteristic of a split card while it’s in a zone other than the stack gets two answers (one for each of the split card’s two halves). [...]</p>
</blockquote>
<p>So Catch // Release had CMCs 3 and 6 when it was discarded..</p>
<p>Since Blast of Genius doesn't compare CMC but gets its value, you perform the action using the CMC for each CMC the card has.</p>
<blockquote>
<p>708.5's Example: Infernal Genesis has an ability that reads, “At the beginning of each player’s upkeep, that player puts the top card from his or her library into his or her graveyard. He or she then puts X 1/1 black Minion creature tokens onto the battlefield, where X is that card’s converted mana cost.” If the top card of your library is Assault/Battery, which has converted mana costs of 1 and 4, when this ability resolves, you simultaneously put one and four creature tokens onto the battlefield, for a total of five.</p>
</blockquote>
<p>A ruling on Blast of Genius confirms this:</p>
<blockquote>
<p>If you discard a split card, Blast of Genius will deal damage equal the sum of its two converted mana costs as a single damage-dealing event.</p>
</blockquote>

CC BY-SA 3.0
2015-03-09T11:18:58.900Z
Is it different? The Blast has a ruling that "If you discard a split card, Blast of Genius will deal damage equal the sum of its two converted mana costs as a **single damage-dealing event**."
Michał Politowski
CC BY-SA 3.0
2015-03-09T12:36:53.413Z
@Michał Politowski, Honestly, I'm not sure. I intended to verify this. I've reversed what I said based on the ruling for now.
ikegami
CC BY-SA 3.0
2015-03-08T23:23:06.303Z
2015-03-09T13:04:06.810Z
2020-06-17T09:01:24.697Z
ikegami
<p>If I were to play <a href="http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=368985">Blast of Genius</a> and chose to discard <a href="http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=368982">Catch // Release</a> Would the converted mana cost be the total cost of both halves or one? </p>

CC BY-SA 3.0
2015-03-09T13:15:08.267Z
Related, although maybe it is not obvious that a fuse card is a split card: http://boardgames.stackexchange.com/q/11875/6692
Rainbolt
<magic-the-gathering>
What is the converted mana cost of fuse cards
sevans
# What is the converted mana cost of fuse cards

(Asked by: username_0 on 2015-03-08)

If I were to play [Blast of Genius](http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=368985) and chose to discard [Catch // Release](http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=368982) Would the converted mana cost be the total cost of both halves or one?

**Tags:** magic-the-gathering

> **Comments:**
> **username_1**: Related, although maybe it is not obvious that a fuse card is a split card: http://boardgames.stackexchange.com/q/11875/6692  

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## 2 answers

### Answer by username_2 on 2015-03-08. Score: 7 | Accepted answer

Its converted mana cost is 9. Blast of Genius will deal 9 damage. [Rule 708.4](http://mtgsalvation.gamepedia.com/Split_cards) says

> * **708.4.** In every zone except the stack, the characteristics of a split card are those of its two halves combined. This is a change from previous rules.
>
>   + **708.4b** The mana cost of a split card is the combined mana costs of its two halves. A split card’s colors and converted mana cost are determined from its combined mana cost.

Catch has a mana cost of {1}{U}{R} and Release has a mana cost of {4}{R}{W}, so the combined mana cost is {5}{W}{U}{R}{R} and the converted mana cost is 9.


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### Answer by username_3 on 2015-03-08. Score: 5

It has two converted mana costs, 3 and 6. It will deal 3 damage and 6 damage simultaneously, which is the same as doing 9 damage.

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Outside of the stack, Catch // Release has two CMCs.

> 708.2. In every zone except the stack, split cards have two sets of characteristics and two converted mana costs. [...]
>
> 708.5. Anything that asks for a particular characteristic of a split card while it’s in a zone other than the stack gets two answers (one for each of the split card’s two halves). [...]

So Catch // Release had CMCs 3 and 6 when it was discarded..

Since Blast of Genius doesn't compare CMC but gets its value, you perform the action using the CMC for each CMC the card has.

> 708.5's Example: Infernal Genesis has an ability that reads, “At the beginning of each player’s upkeep, that player puts the top card from his or her library into his or her graveyard. He or she then puts X 1/1 black Minion creature tokens onto the battlefield, where X is that card’s converted mana cost.” If the top card of your library is Assault/Battery, which has converted mana costs of 1 and 4, when this ability resolves, you simultaneously put one and four creature tokens onto the battlefield, for a total of five.

A ruling on Blast of Genius confirms this:

> If you discard a split card, Blast of Genius will deal damage equal the sum of its two converted mana costs as a single damage-dealing event.

> **Comments:**
> **username_4**: Is it different? The Blast has a ruling that "If you discard a split card, Blast of Genius will deal damage equal the sum of its two converted mana costs as a **single damage-dealing event**."  
> **username_3**: @username_4, Honestly, I'm not sure. I intended to verify this. I've reversed what I said based on the ruling for now.  

---

