Every time Krenko attacks, it gets bigger, putting a +1/+1 counter on it, and then you get to make 1/1 Goblin tokens equal to Krenkos power
The goal of Scapeshift decks is to get enough Lands in play so that when you cast Scapeshift, you can find Valakut and enough Mountains to burn the opponent out all at once
Once on the battlefield, Liesa acts more like a tax effect, forcing your opponents to lose two life every time they cast a spell
But thats not to say that fair Magic is beyond the reach of this archetype DOING IT THE HARD WAY Regardless of whether a sacrifice player is currently threatening one of their many infinite combos, you can rarely afford to sleep on their boardstate or combat step
If you were playing fair, there was no way you could compete with that if the deck pulled it off and many games were won simply due to a willingness to play a card this powerful, allowing such decks to win long games they would otherwise be lost in
In Towashis case, its putting +1/+1 counters on up to three creatures you control, in order to make them modified