ネクロバインダー

• Type: Attack
• Cost: 1
• Effect: Deal 10 damage. The next Ethereal card you play costs 0.

A 1-cost 10-damage Attack that turns the next Ethereal card into free. In an Ethereal deck, this is effectively "1 cost for 10 damage + the next Ethereal free" — insane efficiency.

Blasphemy (1-cost Ethereal, 13-17 damage) for 0 = total 1 cost, 23-27 damage. Killing Intent (Ethereal Power) for 0 lets you bank the damage multiplier starting the same turn. High-cost Ethereals like Domain (3 → 0) and Analyze (1 → 0 with draw 3) also shine as the zero-cost target.

Rating: A-tier (the cost-reduction engine for Ethereal decks)

• Play immediately before the Ethereal card you most want to fire this turn
• Blasphemy (Ethereal 13-17 dmg) for free = combined 1 cost, 23-27 damage
• Killing Intent (Ethereal Power) for 0 immediately unlocks that turn's 50-75% damage multiplier
• Domain (Ethereal 3 → 0) freed up means effectively 1 cost for a per-turn energy + draw Power

• Blasphemy: Ethereal 13-17 damage Attack. Post-Veil Piercer it's 0 cost for 23-27 total damage
• Killing Intent: Ethereal Power. Zeroing it lets you bank the attack multiplier immediately
• Domain: 3-cost Ethereal Power. Becomes effectively 1-cost to deploy through Veil Piercer
• Analyze: 1-cost Ethereal that draws 3. 0-cost means draw 1 card then draw 3 more — huge ramp
• Defiance: Ethereal Block + debuff Skill. Free Block and free debuff application

• Necrobinder Ethereal Build (key card, A-tier)