Typically, we target the Leader to either end the game or put us a step ahead towards that
Nested Shambler might only make one Green Squirrel creature token when it dies, but if I were to play Yavimaya, Cradle of Growth to make all my lands Forests and enchant that Zombie with Blanchwood Armor to give it +1/+1 for each Forest I control, I could be looking at an awful lot of Squirrels
C Common Twin-Headed Thunder Dragon X LIGHT Level 7 [ ThunderFusion ] ATK 2800 DEF 2100 "Thunder Dragon" + "Thunder Dragon" SR Super Rare Witch's Apprentice X DARK Level 2 [ SpellcasterEffect ] ATK 550 DEF 500 As long as this card remains face-up on the field, increase the ATK of all DARK monsters by 500 points and decrease the ATK of all LIGHT monsters by 400 points
Since it's a Machine, it's quite possible to get a Rank 4 Xyz in a combo with Machine Duplication
Primeval Titan can combo off without its partner-in-crime Amulet of Vigor, and Aftermath Analyst can create infinite loops with its activated ability
If you do, return this card to the battlefield tapped