Tar Shot + Delta Stream behaves... strangely.
Test 1: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111742424
While under the effects of Delta Stream, Tornadus and Thundurus are hit with two Heat Waves: one before being covered in tar and one after. Delta Stream claims to weaken the second Heat Wave for both, but Thundurus is hit super effectively for about double damage while Tornadus is not.
Test 2: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111746310
To make sure there isn't a difference between spread and single target moves, the experiment is repeated, but Tornadus and Thundurus are attacked separately with Mystical Fire. Same result.
Test 3: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111757869
To test what happens with dual-type Pokemon with Flying as a primary type, Corviknight, Pokestar UFO, and Cramorant are hit with two Lava Plumes: one before being covered in tar and one after. With the first Lava Plume, Corviknight is hit super effectively, UFO is hit neutrally, and Cramorant is hit not very effectively, as expected. With the second Lava Plume, the wind claims to protect Corviknight and UFO, but both are hit super effectively for about double damage. There is no message saying Cramorant is protected by wind or hit for non-neutral damage, and it also takes about double damage.
Test 4: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111785742
To test the difference between Flying and non-Flying Pokemon who are already weak to Fire, the first test is repeated with Articuno and a Virizion IV'd to be exactly as bulky as Articuno. The wind claims to protect only Articuno from the second Heat Wave, and both are hit super effectively. Strangely, while Articuno is hit for about double damage, Virizion is hit for about six or seven times the damage. That's why this test uses Feebas instead of Salazzle. Virizion kept fainting. After it fainted to Jolly Cinderace, I just used the weakest thing I could find.
BUG STATUS: FIXED by urkerab
Bonus bug: https://replay.pokemonshowdown.com/gen8customgame-1111760614
Just to refresh myself on how Delta Stream is supposed to behave, I did this test, and a warning that "one player isn't adhering to a 510 EV limit and the other player is" popped up. No Pokemon had over 510 EVs, but the Rayquazas had none while the Jolteon has 112 in Special Attack.
BUG STATUS: NOT A BUG, the Rayquazas had all 252's, as is the default for formats with no EV limit if you don't manually set EVs. (Zarel)
Test 1: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111742424
While under the effects of Delta Stream, Tornadus and Thundurus are hit with two Heat Waves: one before being covered in tar and one after. Delta Stream claims to weaken the second Heat Wave for both, but Thundurus is hit super effectively for about double damage while Tornadus is not.
Test 2: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111746310
To make sure there isn't a difference between spread and single target moves, the experiment is repeated, but Tornadus and Thundurus are attacked separately with Mystical Fire. Same result.
Test 3: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111757869
To test what happens with dual-type Pokemon with Flying as a primary type, Corviknight, Pokestar UFO, and Cramorant are hit with two Lava Plumes: one before being covered in tar and one after. With the first Lava Plume, Corviknight is hit super effectively, UFO is hit neutrally, and Cramorant is hit not very effectively, as expected. With the second Lava Plume, the wind claims to protect Corviknight and UFO, but both are hit super effectively for about double damage. There is no message saying Cramorant is protected by wind or hit for non-neutral damage, and it also takes about double damage.
Test 4: https://replay.pokemonshowdown.com/gen8doublescustomgame-1111785742
To test the difference between Flying and non-Flying Pokemon who are already weak to Fire, the first test is repeated with Articuno and a Virizion IV'd to be exactly as bulky as Articuno. The wind claims to protect only Articuno from the second Heat Wave, and both are hit super effectively. Strangely, while Articuno is hit for about double damage, Virizion is hit for about six or seven times the damage. That's why this test uses Feebas instead of Salazzle. Virizion kept fainting. After it fainted to Jolly Cinderace, I just used the weakest thing I could find.
BUG STATUS: FIXED by urkerab
Bonus bug: https://replay.pokemonshowdown.com/gen8customgame-1111760614
Just to refresh myself on how Delta Stream is supposed to behave, I did this test, and a warning that "one player isn't adhering to a 510 EV limit and the other player is" popped up. No Pokemon had over 510 EVs, but the Rayquazas had none while the Jolteon has 112 in Special Attack.
BUG STATUS: NOT A BUG, the Rayquazas had all 252's, as is the default for formats with no EV limit if you don't manually set EVs. (Zarel)
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