Rainbowscale Hydra

Converge - Rainbowscale Hydra enters the battlefield with a +1+1 counter for each color
of mana spent to cast it.
{t}: Remove a +1+1 counter from Rainbowscale
Hydra: Create an Shimmering Shard artifact
token with "{3}: Sacrifice this artifact: you
gain 2 life, draw a card, and search your library
for a basic land card, then put it onto the battlefield."