If a card is discarded while Rest in Peace is on the battlefield, abilities that function when a card is discarded (such as madness) still work, even though that card never reaches a graveyard
Now, Ich-Tekik has Partner which means we need to add another Legendary Creature to the Command Zone
Stormcatch Mentor Goblin Electromancer is a good card
With Luffy Is the Man Who Will Become the King of Pirates!!!, you can start planning multiple strong attacks, trying to keep the heat on the opposing player and forcing them to have the Counter power to survive your onslaught
Enchantment Path of Annihilation Devoid (This card has no color.) When this enchantment enters, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add ." Eldrazi you control have ": Add one mana of any color." Whenever you cast a creature spell with mana value 7 or greater, you gain 4 life
After all, phoenixes are known for rising from the dead, and black is the best colour for creature reanimation