This trade off may seem harsh, but its almost always worth it, especially on cards like Maui, Hero to All and Gaston, Arrogant Hunter
First, look on the left side of the card just below the artwork
This means that it provides up to 35 dB Gain
Demonlord Belzenlok deals 1 damage to you for each card put into your hand this way
BT16-061 U Digimon Lv.5 DoruGreymon Color Black Purple Cost 7 DP 7000 Digivolve Cost 1 BlackPurple 4 from Lv.4 Form Ultimate Attribute Data Type Beast Dragon/X Antibody/SoC Card Text 1 [Special Digivolution Condition] [Digivolve] Lv.4 w/[Dorugamon] in name or w/[SoC] trait: Cost 3 [Effect] Collision (During this Digimon's attack, all of your opponent's Digimon gain Blocker, and the opponent blocks if able.) [All Turns] When an attack target is switched, this Digimon with an [SoC] trait Tamer card in its digivolution cards may digivolve into a Digimon card with the [Beast Dragon], [Undead] or [SoC] trait in the hand without paying the cost
The topic came up on Mark Rosewater's blog