Downthrow
The downthrow is a part of Mario's movement and a variation of cap throw. While being very useful for reaching distant objects with Cappy, downthrows are commonly seen in trickjumping as part of an up-down vault. A unique property of downthrows is that Cappy will stick to the ground if it hits a slope. A downthrow takes 57 frames until fully thrown, can spend 22-122 frames at maximum extended length, can be homed after 27 frames, it takes 8 frames until Mario can jump or dive, 28 frames until Mario can crouch or spinpound.[1]
Execution
There are two methods for executing a downthrow. The first method consists of performing a ground pound followed by performing a Cap throw by Shaking the Controller Downwards or Pressing X/Y after releasing the ground pound button. If the ground pound button is not released before the cap throw is performed, Mario will initiate a roll instead of a downthrow.
The second method for executing a downthrow requires the use of a pair of Joy-Cons. It consists of shaking the controller downwards, which will cause a regular motion-controlled cap throw if done without using a pair of Joy-Cons.