Naming convention is Item1 in Item2. Here it's Lost in Space.

Idea is smaller spell inside bigger spell. Two options:

1. Cast both halves together.
2. Cast left half.

Frame look better is like flip card without rotation. One spell atop another and text in same direction.

Best removal and even besterer removal; 2-for-1? Yow. Ok, so it costs but so very worth it.

Fancy kicker!

This seems like a logical extension of split card variation.

Hmm. Good point - how is this actually any different from kicker at all? The spell gains another colour, which might matter in a colour-matters set, and another name, which should only matter in very niche cases.

A slight quibble to the naming convention: if this is meant to be "a smaller spell inside a bigger spell", the names suggest Lost is "inside" Space (so the card is "Lost in Space"), but the effects suggest Space is inside Lost (if I have to cast the bigger spell, and then I can optionally add the smaller spell inside it).

Everything is kicker! Existing split cards do suggest a slightly different art would be preferable (like fuse got a slight change). Perhaps the right hand size being slightly smaller would be a nice signal.

V: amuseum already described the frame he had in mind: a flip card (like Student of Elements) but with the bottom half right-way-up, and perhaps a little smaller (so it's a black box of [name+cost][type][text] embedded in the main blue frame, surrounded by the blue pinlines).

And I know everything is kicker, but this is really just kicker ;)

That 'Lost' side of the card alone is arguably better than Vindicate (more easily splashed and the target doesn't go to grave)... in blue (which is the go-to color for legacy+).

I think there's room for "small effect" and "larger effect encompassing small effect but feeling fairly different" as a separate identity. Especially if the two effects feel sufficiently different it would be strange to consider them as the same spell. But OTOH, it's hard to think of too many examples. "destroy two creatures" is just a bit too good.

On making this not kicker: What if when Lost is cast (or Space... now that Alex mentioned the naming is kind of backwards, it's bugging me too. Sorry, I'm walking off topic. Let's start that again.

How about exiling Lost when it resolves? And allow Space to be cast only from exile (and only when exiled with Combination.) That way you still get the 'one spell inside another' feel, but it's not exactly kicker. More of a delayed kick... but I doubt many people would think of it that way by that point.

jmg: That's sounding very similar in gameplay to aftermath, at that point. The weirdness about exile is kinda a distraction.

Tahazzar: Good point. Completely ignoring "Space", just "Lost" on its own is currently rather better than Utter End which saw occasional tournament play.