Squad doesn't sum cost

When casting a spell with the Squad keyword (e.g. [[Sicarian Infiltrator]]), the user is prompted to input the number of times they want to pay the squad cost. Then, instead of summing the cost and displaying the total of how much the user must pay, the cost displayed is the base cost of the spell. Then when that's paid, the cost of one squad, and then when that's paid it displays the next, and so on. For example, Sicarian Infiltrator is {2}{U}, so that's the initially displayed cost, then the displayed cost is {2}, then when it's paid the cost is {2} again, then {2} again, for as many times as you selected to pay for squad.

So initial cost:
Then for every squad cost:

This makes it unnecessarily difficult to keep track of how much mana is left to be paid. An extremely similar mechanic, multikicker, does not share this problem, as it sums the cost of each "kick" into a single cost. See below in the case of [[Everflowing Chalice]], kicking it 3 times:


Start by tracing how the Squad keyword builds and presents its payment cost, then compare that flow with multikicker using Sicarian Infiltrator and Everflowing Chalice. Verify the behavior by casting Sicarian Infiltrator with multiple Squad payments and confirm that the full combined cost is displayed and paid as one cost.

Written by the indexing model from the issue text.