Sky Striker Mobilize - Contact
This Skill can be used if your Deck does not contain "Sky Striker Mobilize - Engage!".
1: At the start of the Duel, add 2 "Sky Striker Mobilize - Engage!" to your Deck and 1 each of the 4 different kinds of "Sky Striker Ace" Link Monsters not already in your Extra Deck. During this Duel, you cannot Normal or Special Summon any monsters except for "Sky Striker" monsters (excluding Special Summons from the Extra Deck and the opponent's Graveyard).
Other Source
Lifetime Mission