Train of ThoughtHow it works & interactions with other cards

Understanding Replicate

Replicate is a keyword that functions as an additional cost when you cast the spell. You may pay the replicate cost of {1}{U} as many times as you want. When you cast Train of Thought, a triggered ability goes on the stack that creates a copy of the spell for each time the replicate cost was paid. These copies are put directly onto the stack, meaning they are not 'cast' themselves.

Step-by-Step Resolution

First, you announce the spell and choose how many times to replicate it. After paying the total mana, the replicate trigger is placed on the stack above the original spell. The copies resolve one by one, with each copy instructing you to draw a card. Finally, the original Train of Thought resolves, giving you your final card. Because each copy is a separate object on the stack, players can potentially counter individual copies or the original spell.

Strategic Timing

Since Train of Thought is a sorcery, you can only cast it during your main phase when the stack is empty. It is best used when you have stalled out and need to find specific answers. Unlike cards that fix your next few draws, this card provides raw card advantage that stays in your hand.

Common Pitfalls

A common mistake is forgetting that countering the original spell does not automatically counter the replicated copies. The replicate trigger creates the copies independently of whether the original spell remains on the stack. To stop all the draws, an opponent would need a counterspell for every single copy or a specific effect that clears the stack.

Interaction examples

Early Game Setup

Ponder

On turn one, you cast Ponder to organize the top of your library. If you see that you need more resources for turn two, you can cast Train of Thought without any replicate payments just to draw the specific card you moved to the top.

Refilling After a Discard

Windfall

If a player casts Windfall and everyone discards their hands, you might find yourself with plenty of mana but few cards. You can cast Train of Thought and pay the replicate cost three times (totaling 8 mana). This puts the original and three copies on the stack, allowing you to draw four cards and rebuild your position immediately.