<p>You are entirely right, there is no reason that Response // Resurgence should stop you from having Keruga as a companion. Seems like a bug in MTGO to me.</p>

CC BY-SA 4.0
2020-04-18T16:21:34.390Z
2020-04-18T16:21:34.390Z
Arthur
<p>The situation: I am playing MTGO and I have a deck with Keruga, the Macrosage in my sideboard and Response // Resurgence in my main deck.</p>

<p>Keruga, the Macrosage states the following, emphases mine:</p>

<blockquote>
  <p>Companion — <strong>Your starting deck contains only cards with converted mana
  cost 3 or greater and land cards.</strong> (If this card is your chosen
  companion, you may cast it once from outside the game.)</p>
  
  <p>When Keruga, the Macrosage enters the battlefield, draw a card for
  each other permanent you control with converted mana cost 3 or
  greater.</p>
</blockquote>

<p>The problem: MTGO shows that Keruga, the Macrosage is not a valid Companion once Response // Resurgence is included in my deck, a card with a CMC of 7.</p>

<p>Referencing both rules of split cards:</p>

<blockquote>
  <p>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. </p>
  
  <p>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. An effect that refers
  specifically to the symbols in a split card’s mana cost sees the
  separate symbols rather than the whole mana cost.</p>
</blockquote>

<p>So it should be allowed to cast Keruga, the Macrosage as a companion in this case, correct?</p>

<magic-the-gathering><mtg-online>
Is it allowed to use Keruga as a Companion when using a split card with CMC >= 3?
skiwi
# Is it allowed to use Keruga as a Companion when using a split card with CMC >= 3?

(Asked by: username_0 on 2020-04-18)

The situation: I am playing MTGO and I have a deck with Keruga, the Macrosage in my sideboard and Response // Resurgence in my main deck.

Keruga, the Macrosage states the following, emphases mine:

> Companion — **Your starting deck contains only cards with converted mana
> cost 3 or greater and land cards.** (If this card is your chosen
> companion, you may cast it once from outside the game.)
>
> When Keruga, the Macrosage enters the battlefield, draw a card for
> each other permanent you control with converted mana cost 3 or
> greater.

The problem: MTGO shows that Keruga, the Macrosage is not a valid Companion once Response // Resurgence is included in my deck, a card with a CMC of 7.

Referencing both rules of split cards:

> 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. An effect that refers
> specifically to the symbols in a split card’s mana cost sees the
> separate symbols rather than the whole mana cost.

So it should be allowed to cast Keruga, the Macrosage as a companion in this case, correct?

**Tags:** magic-the-gathering, mtg-online


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## 1 answers

### Answer by username_1 on 2020-04-18. Score: 4 | Accepted answer

You are entirely right, there is no reason that Response // Resurgence should stop you from having Keruga as a companion. Seems like a bug in MTGO to me.


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