Forced Fruition

Whenever an opponent casts a spell, that player draws seven cards.

Howling Mine

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.

Players have no maximum hand size.
At the beginning of each player's draw step, that player draws an additional card, then discards a card.

At the beginning of each player's draw step, that player draws an additional card.