Having access to reliable sources of card drawpreferably those that do not depend on other colorsallows for sustained pressure and options throughout the match
Some examples include: The Warlock's Hero Power, Life Tap, which lets them draw a card for 2 Mana at the cost of taking 2 damage
It's also somewhat appropriate, so I can make up for it
It has a similar effect to Garoth, in that by detaching an XYZ material you can mill the top 3 cards of your deck, while drawing a card for every Lightsworn monster that was milled this way
But Panoptic Mirror didn't undergo any price movements at all until the day it was taken off the MTG banlist, showing that this is one unbanning the community didn't predict
Lugia EX: Remove a Fire Energy, a Grass Energy, and a Lightning Energy from this Pokemon