If this creature gets enough -1/-1 counters put on it to cause it to go to the graveyard, modular will put a number of +1/+1 counters on the target artifact creature equal to the number of +1/+1 counters on this creature before it left the battlefield
Oh, and if you like the idea of getting Contract from Below from your Spike, might I suggest this Un- card instead
Below is a complete deck list broken down by card function so you can get a closer look
The impulse draw effect to exile three cards is a useful way to have more action during your turn and ways to dump the mana you generated
They are forced to lose turns if they want to cast anything with a high mana cost
Ajani Goldmane Ajani Steadfast Ajani Unyielding Ajani Vengeant Ajani, Adversary of Tyrants Ajani, Caller of the Pride Ajani, Inspiring Leader Ajani, Mentor of Heroes Ajani, Nacatl Avenger Ajani, Outland Chaperone Ajani, Sleeper Agent Ajani, Strength of the Pride Ajani, Valiant Protector Ajani, Wise Counselor Ajani, the Greathearted Aminatou, the Fateshifter Angrath, Captain of Chaos Angrath, Minotaur Pirate Angrath, the Flame-Chained Archangel Elspeth Arlinn Kord Arlinn, Embraced by the Moon Arlinn, Voice of the Pack Arlinn, the Moon's Fury Arlinn, the Pack's Hope Ashiok, Dream Render Ashiok, Nightmare Muse Ashiok, Nightmare Weaver Ashiok, Sculptor of Fears Ashiok, Wicked Manipulator B.O.B
