mtg kindred card type is a Kindred cards are the replacement for Tribal type cards. They are not a new type When the screams subsided Kindred Summons

So, to that end, one part of Y'shtola's text points us in an interesting direction

Those cards are considered to be "used to craft" that permanent as long as they remain exiled and the permanent remains on the battlefield, even if the permanent's controller changes or some of its characteristics change (because of a copy effect, for example.) 2023-11-10 The copy is created on the stack, so it's not "activated." Abilities that trigger when a player activates an ability (such as Locus of Enlightenment's own triggered ability) won't trigger

Leonin Arbiter

All of it sums up to insurmountable advantageIm having a hard time seeing how you overcome this pair once active, especially if they led with a Will Kenrith

Doran, the Siege Tower, Teneb, the Harvester, Overgrown Estate, and that's it

If you want to throw real money at Arena , you can buy gems, which are spent to buy larger numbers of booster packs at once, but all you really get for your cash is immediacy and convenience