VRAINS anime series features Speed Duels, with the difference that Skills are special abilities of the Duelist that can be used in most situations but once per Duel, rather than cards that must be played during one's Main Phase (for example, the protagonist Yusaku can generate a random monster when his Life Points are below 1000)
applies when a card from the battle area or from under a card is placed into another area
That means your creatures won't naturally untap at the start of each new combat, but they will untap if one of your large creatures connects during any combat
Many players find this gameplay loop boring, especially because every archetype has adapted to the same strategy: fast set-ups for one-hit KOs
You can obtain the Red (2-Stars rarity) card by opening Shining Revelry from Shining Revelry set
This can buff a decent number of creatures, especially in Blue/White, and Cycling is a great addition