Ciaran, Stony Scholar

Your opponents can cast spells only any time they could cast a sorcery.
Whenever a player draws a card, reveal it. It gains assist.
Whenever a player casts a spell with assist, each player who assisted draws a card and gains 2 life.

{2}{g}: Target creature gets +X/+X until end of turn, where X is the number of cards its controller has drawn this turn.