yu gi oh structure deck crystal beast Game Crave Tournament Store - Rainbow Bridge of the Heart (SDCB-EN045) All cards will be carefully packed for safe transit Crystal Tree Structure Deck: Legend

This is largely due to how Masked HERO's are summoned from the Extra Deck in that they are transformed using "Change" cards

Promo Info BOOSTER VS ROYAL KNIGHT [BT-13] CLOSECLOSE BT13-067 C Digimon Lv.4 Gladimon Color Black Form Champion Attribute Vaccine Type Warrior DP 4000 Cost 5 Digivolve Cost 1 2 from Lv.3 Digivolve Cost 2 - Upper Text Jamming (This Digimon can't be deleted in battles against Security Digimon.) Lower Text Reboot (Unsuspend this Digimon during your opponent's unsuspend phase) Promo Info BOOSTER VS ROYAL KNIGHT [BT-13] CLOSECLOSE BT13-068 C Digimon Lv.4 KnightChessmon Color Black Yellow Form Champion Attribute Virus Type Puppet DP 4000 Cost 5 Digivolve Cost 1 3 from Lv.3 Digivolve Cost 2 3 from Lv.3 Upper Text Digivolve: 2 from Lv.3 w/[Chessmon] in name Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead.) [On Deletion] If it's your opponent's turn, you may play 1 level 4 or lower Digimon card with [Chessmon] in its name from your hand without paying the cost

You should aim to pay something like 20-25 life to get that many cards, and heres where the low cost of the cards will help

GX series

Theros block lands are a great example of this and even then those lands werent that bad