: Cardfight!! Vanguard
: Booster Set 4: Eclipse of Illusionary Shadows
[CONT]:Sentinel (You may only have up to four cards with "[CONT]:Sentinel" in a deck.) [AUTO]:[Choose a «Megacolony» from your hand, and discard it] When this unit is placed on (GC), you may pay the cost. If you do, choose one of your «Megacolony», and that unit cannot be hit until end of that battle.