Cannot use wall of roots mana abilities and convoking it for Convoke effects
1. Cannot use wall of roots mana abilities and convoking it for Convoke effects
2. Wall of Roots on the field, Chord of Calling in my hand. I try to use the mana ability of Wall of Roots to add a green mana, then tap Wall of Roots as another mana for the Convoke cost.
3. I can't do both
4. Unless I'm mistaking, I should be able to use Wall of Roots ability AND tapping it for convoke as sources to pay for the cost