Being able to reduce or remove Retreat Cost can make switching out cards much easier during a match, and only having to use 3 Lightning Energy to pull off a multi-attack like Multishot Lightning is unreal
It's a nice consideration if you want to dip into additional Type Four bounce effects
Kokusho is huge as a 5/5 flier for 4BB, and when it dies, each opponent loses 5 life, and Kokusho's controller gains life equal to the total life lost
Control Decks such as Snorlax Stall get access to Eri, a new supporter that allows you to look at your opponents hand and discard 2 item cards, getting rid of all their switching options
WWWC Max Tyrant 240 Weakness: Lightning Resistance: none Retreat: 4 Glaceon VMAX - Water - 310 HP Pokmon - VMAX - Evolves from Glaceon V Ability: Crystal Veil Prevent all damage done to this Pokmon by attacks from your opponent's Pokmon VMAX, except any Glaceon VMAX
Stinkweed Imp and Golgari Thug are both great blockers, with the death-trigger ability on Golgari Thug very relevant