Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

, : Add .

Look at the top five cards of your library. You may reveal any number of creature cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in any order.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
: Add .

Flying
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Destroy target artifact or enchantment.
Draw a card.

Metalcraft — Snapsail Glider has flying as long as you control three or more artifacts.

Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Draw a card.

Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip

Target creature you control deals damage equal to its power to target creature you don't control.

Flying
Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Target creature gets +2/+2 and gains trample until end of turn.