If you can reduce Tree of Perditions starting toughness lower than 13, you can easily take out an opponent in only a single attack
They are also able to quest for one lore, you know, if you don't have any enemies to beat up
The most significant of these comes on Slumbering Trudge, which has had its text changed to the following: This creature enters with a number of stun counters on it equal to three minus X
For example, Marionette Apprentice will enter the battlefield as a 1/2 creature, then its fabricate ability goes on the stack
It will rarely reach -8 territory as your opponent will recognise its offensive danger and look to remove it as soon as possible
And one of the good things about this is that it saves you from major combat problems, but that one blocker that'd kill an attacker will do so, and yet won't damage back