The low mana curves present in Modern, Legacy, and Vintage make countering a one-drop for free an absurdly powerful proposition
In this case, if you have five cards in hand, Ms
Official Chinese website (currently inaccessible):
Garoth, Lightsworn Warrior X LIGHT Level 4 [ WarriorEffect ] ATK 1850 DEF 1300 If a card(s) is sent from your Deck to the GY by the effect of a "Lightsworn" monster you control, except "Garoth, Lightsworn Warrior": Send the top 2 cards of your Deck to the GY, then draw 1 card for each "Lightsworn" monster sent to the GY by this effect
Not only does it give your creatures evasion, but it also lets them hit twice as hard
Conveniently, this segues nicely into the next topic to talk about: how to get the most value out of your wildcards