It isn't a vehicle or artifact creature
At base, it taps for green
Providing token support, card draw, and substantial damage with double strike, Calgar will be a solid piece in the 99 or at the helm of his own deck

Abstruse Interference Abzan Ascendancy Advent of the Wurm Adverse Conditions Aerie Worshippers Ajani Goldmane Ajani's Chosen Ajani, Outland Chaperone Akoum Stonewaker Akroan Crusader Alive // Well Angelic Accord Animate Object Ant Queen Arlinn Kord Armada Wurm Aspiring Aeronaut Assault // Battery Assemble the Legion Assemble the Rank and Vile Atla Palani, Nest Tender Attended Knight Auton Soldier Avacyn's Collar Avenger of Zendikar Awaken the Sky Tyrant Awakening Zone Back from the Brink Baloth Cage Trap Banshee of the Dread Choir Batterskull Beamsaw Prospector Bear's Companion Bearer of Overwhelming Truths Beast Attack Beckon Apparition Bestial Menace Bioengineered Future Biomechan Engineer Biotech Specialist Bitterblossom Bitterthorn, Nissa's Animus Blade Splicer Blade of Selves Blisterpod Bloodline Keeper Bonehoard Bonny Pall, Clearcutter Boris Devilboon Bottle of Suleiman Breeding Pit Briarbridge Patrol Bridge from Below Brimaz, King of Oreskos Brindle Shoat Brood Butcher Brood Keeper Brood Sliver Broodbirth Viper Budoka Gardener Bygone Bishop Byway Courier Cackling Counterpart Call of the Conclave Call of the Nightwing Call the Bloodline Call the Skybreaker Caller of the Claw Caller of the Pack

Phyrexian Unlife Compleatly awful Few cards portray the fear-factor of the Phyrexians like Phyrexian Unlife
You can play it when theres one opposing creature, and then the creature will die at the start of your opponents turn