Both players can effectively draw as many cards as they want
15 Will, Scion Of Peace Negotiations Broke Down If you want to cast spells with a massive mana commitment but want a cheap way to cheat them out, look no further than Will, Scion of Peace
Foil cards, on their end, are a bit thicker as they have an extra layer on top of the card that creates that shiny, holographic look
For example, Terra, Herald of Hope has a main set counterpart in Terra, Magical Adept/ Esper Terra (below)
Ashling, Rekindled / Ashling, Rimebound I'm cheating a little since the wizard is on the backside of this Ashling iteration, but Ashling, Rekindled is rarely in play for longer than the turn cycle required to transform into Ashling, Rimebound
But realistically, Mardu Siegebreaker is a 4/4 deathtouch haste that gives a creature you control pseudo-myriad, and thats a lot of damage coming out of nowhere