Cubic Ascension Glitch?

[Schorl Tourmaline]

I've been playing cubics a bit in PvP lately, and I thought that the deck, having good burn power, could fit a Lava Golem in it. However, I've come across an odd situation twice now where my trap, Cubic Ascension, would not activate after summoning Lava Golem to my opponent's field. It happened while it was on the field, and once when it was in the grave. As far as I know, all conditions of the effect were fulfilled, and the opponent had nothing preventing me from activating either effect. Am I missing something, or did I lose because of a bug?

[Soda]

When an opponent's monster declares an attack: Special Summon 1 "Vijam the Cubic Seed" from your Deck, and if you do, change the attack target to it, and perform damage calculation. If your opponent's LP are at least 2000 higher than yours: You can banish this card from your GY; Special Summon 1 "Vijam the Cubic Seed" from your hand, Deck, or GY, then, if only your opponent controlled a monster when this effect was activated, you can Special Summon up to 2 more "Vijam the Cubic Seed". You can only use this effect of "Cubic Ascension" once per turn.

Either you're using the wrong card name in the question or you've misread it. Nothing in this effect triggers on a summon of any monster.

[Papa Shekels]

You had no vijam in your deck, so the card had no target and could not activate. The only way to get vijam in your deck right now is with the cubic seed skill, and that skill only activates if you have no monsters in your deck/extra deck except cubic monsters (and up to 6 non-cubic spells/traps). So unfortunately, cubics are doomed to be a mediocre, inconsistent burn deck at best

[Schorl Tourmaline]

Originally posted by Papa Shekels:

You had no vijam in your deck, so the card had no target and could not activate. The only way to get vijam in your deck right now is with the cubic seed skill, and that skill only activates if you have no monsters in your deck/extra deck except cubic monsters (and up to 6 non-cubic spells/traps). So unfortunately, cubics are doomed to be a mediocre, inconsistent burn deck at best

Ahhh, see that makes sense.

[electricwizard]

The deck is nothing without the skill, which limits you to only 6 non-cubic spells/traps & no non-cubic monsters. However, the deck is in no way bad since it has a ton of protection + the ability to negate/freeze any monster (especially if your opponents don't read).

Techs could be MST, Parallel Twister, Storm, Lance (to protect Gundil) and any traps that protect from lethal, preferably ones that make you discard a card like Rainbow Life or Hallowed. Straight Flush is also a good idea to clear their spells/traps since you'll stall long enough for them to stack their backrow.

If you're playing the burn version, don't start burning unless you're sure it's lethal (otherwise Ascension will be useless). If you're playing the Gundil version (my fav), don't summon it unless you've cleared their backrow with MST/Storm/Parallel Twister.

Here's my decklist if anyone is interested https://i.imgur.com/2WwER68.jpg
(only thing I'd change is remove a Gundil and add a Cubic Karma but I only have 2)