Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Greymond, Avacyn's Stalwart

As Greymond, Avacyn's Stalwart enters, choose two abilities from among first strike, vigilance, and lifelink.
Humans you control have each of the chosen abilities.
As long as you control four or more Humans, Humans you control get +2/+2.

Parallel Lives

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.