Samut takes full advantage of this, granting other creatures the player controls +X/+0, where X is their current speed, as well as making non-creature spells cost X less to cast, where X is their current speed
Phyrexian Altar is 10% sac outlet, 90% combo engine, and it wouldve 100% said activate only once per turn if printed today
Svyelun of Sea and Sky
The idea here is to nullify the downside of lands coming into play tapped, like the bouncelands (Simic Growth Chamber, thus generating more mana than usual
Having your six-drop killed only to draw a card and put a six-plus mana card from your hand into play for free is a solid bargain
Murktide was always just a half-step behind Grixis Deaths Shadow when Lurrus was legal, but now that Lurrus is banned and Shadow has taken a step back, Murktide is here to claim the title of the premier tempo deck in Modern