Changing 13v16 to 1-4. When 13 goes first, 16 discards
Wasteland, then plays
Gibbering Descent and everyone skips their upkeeps forever. When 16 goes first, 13 needs all three cards to cast
Gibbering Descent, so it gets shut out and loses.
No,
Gibbering Descent still has a Madness cost of
. Once Rush discards Wasteland, his Descent isn't landing.
Changing 13v18 to 3-3.
Ajani Vengeant can't be cast on the draw, but on the play, it still (barely) races the extra life loss.
Changing 16v18 to 3-3. This is basically the same as 13v18.
Changing 18v19 to 3-3. The spirit token makes this a bit different, but 19 is still a goldfish on the draw, and it still wins the race on the play.
I don't think you're timing Ajani right (I got it wrong in my initial scoring too). Ajani would need to fire its +1 twice for every time it fires its -2 just to stay afloat. So that's every third turn it gains 3 life (and deals 3 damage). But it's losing 3 life every single turn to Descent+MountainMoroii+AjaniMoroii. Playing a Mountain there rather than another Lotus or a Petal or even a
Leonin Squire or
Simian Spirit Guide was unwise (even if the extra permanent guards Ajani against
Crack the Earth).
Just looking at the most simple case, 13v18:
18: Mountain Lotus Ajani (3) fire -2 loy abililty (1) (23-17)
13: Lotus Lotus Gibbering Descent
18: Lose 3 to Descent and Moroiis (20-17) fire +1 loy ability (2)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (17-17) fire +1 loy ability (3)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (14-17) fire -2 loy ability (1) (17-14)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (14-14) fire +1 loy ability (2)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (11-14) fire +1 loy ability (3)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (8-14) fire -2 loy ability (1) (11-11)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (8-11) fire +1 loy ability (2)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (5-11) fire +1 loy ability (3)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (2-11) fire -2 loy ability (1) (5-8)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (2-8) fire +1 loy ability (2)
13: Skip upkeep, do nothing
18: Lose 3 to Descent and Moroiis (dead-8)
16v18 is basically the same.
The Orchard variant doesn't fare it any better
18: Mountain Lotus Ajani (3) fire -2 loy abililty (1) (23-17)
19: LED Orchard Gibbering Descent (gift spirit)
18: Lose 4 to Descent and Moroiis, swing for 1 (19-16) fire +1 loy ability (2)
19: Skip upkeep, gift spirit
18: Lose 5 to Descent and Moroiis, swing for 2 (14-14) fire +1 loy ability (3)
19: Skip upkeep, gift spirit
18: Lose 6 to Descent and Moroiis, swing for 3 (8-11) fire -2 loy ability (1) (11-8)
19: Skip upkeep, gift spirit
18: Lose 7 to Descent and Moroiis, swing for 4 (4-4) fire +1 loy ability (2)
19: Skip upkeep, gift spirit
18: Lose 8 to Descent and Moroiis, die hard