Having the capability to refill your hand on both attack and block is phenomenal no matter the situation
They can't be countered or redirected by standard instants and activated abilities, so the only way your opponent can interact with them is with something already in play
Here are five cards that you should be on the lookout for when youre cracking some packs and why you should consider adding them to your decks
Aesi draws you a card whenever you have lands enter the battlefield and lets you play one extra land per turn
Green is also exceptional at creating an immense mana advantage, typically with cheap cards like mana dorks (Llanowar Elves, Badgermole Cub) and land-based ramp, which is pretty unique to green (Rampant Growth, Cultivate)
Sure, you could squeeze a little extra value out of a Genesis Wave, Torment of Hailfire or any other X spell, but doubling down on Hydras would be a fun way to go